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157106628 = 22347531307
BaseRepresentation
bin10010101110101…
…00000111000100
3101221121211210000
421113110013010
5310204403003
623331201300
73615245550
oct1127240704
9357554700
10157106628
1180756598
1244746230
1326719803
1416c18860
15dbd51a3
hex95d41c4

157106628 has 120 divisors (see below), whose sum is σ = 478602432. Its totient is φ = 44006976.

The previous prime is 157106623. The next prime is 157106647. The reversal of 157106628 is 826601751.

157106628 is a `hidden beast` number, since 1 + 571 + 0 + 66 + 28 = 666.

It is a super-3 number, since 3×1571066283 (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 157106592 and 157106601.

It is not an unprimeable number, because it can be changed into a prime (157106623) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 119551 + ... + 120857.

Almost surely, 2157106628 is an apocalyptic number.

157106628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157106628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239301216).

157106628 is an abundant number, since it is smaller than the sum of its proper divisors (321495804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157106628 is a wasteful number, since it uses less digits than its factorization.

157106628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 157106628 is about 12534.2182843606. The cubic root of 157106628 is about 539.5911720405.

The spelling of 157106628 in words is "one hundred fifty-seven million, one hundred six thousand, six hundred twenty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 53 54 63 81 84 106 108 126 159 162 189 212 252 318 324 371 378 477 567 636 742 756 954 1113 1134 1307 1431 1484 1908 2226 2268 2614 2862 3339 3921 4293 4452 5228 5724 6678 7842 8586 9149 10017 11763 13356 15684 17172 18298 20034 23526 27447 30051 35289 36596 40068 47052 54894 60102 69271 70578 82341 105867 109788 120204 138542 141156 164682 207813 211734 247023 277084 329364 415626 423468 484897 494046 623439 741069 831252 969794 988092 1246878 1454691 1482138 1870317 1939588 2493756 2909382 2964276 3740634 4364073 5610951 5818764 7481268 8728146 11221902 13092219 17456292 22443804 26184438 39276657 52368876 78553314 157106628