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157258464 = 253111371087
BaseRepresentation
bin10010101111110…
…01001011100000
3101221220120001120
421113321023200
5310224232324
623334332240
73616450326
oct1127711340
9357816046
10157258464
118084a680
12447ba080
132677095c
1416c57d16
15dc15179
hex95f92e0

157258464 has 96 divisors (see below), whose sum is σ = 454035456. Its totient is φ = 47262720.

The previous prime is 157258463. The next prime is 157258469. The reversal of 157258464 is 464852751.

It is a happy number.

157258464 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157258463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144129 + ... + 145215.

It is an arithmetic number, because the mean of its divisors is an integer number (4729536).

Almost surely, 2157258464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157258464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227017728).

157258464 is an abundant number, since it is smaller than the sum of its proper divisors (296776992).

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

157258464 is a wasteful number, since it uses less digits than its factorization.

157258464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1240 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 157258464 is about 12540.2736812240. The cubic root of 157258464 is about 539.7649457100.

The spelling of 157258464 in words is "one hundred fifty-seven million, two hundred fifty-eight thousand, four hundred sixty-four".

Divisors: 1 2 3 4 6 8 11 12 16 22 24 32 33 44 48 66 88 96 132 137 176 264 274 352 411 528 548 822 1056 1087 1096 1507 1644 2174 2192 3014 3261 3288 4348 4384 4521 6028 6522 6576 8696 9042 11957 12056 13044 13152 17392 18084 23914 24112 26088 34784 35871 36168 47828 48224 52176 71742 72336 95656 104352 143484 144672 148919 191312 286968 297838 382624 446757 573936 595676 893514 1147872 1191352 1638109 1787028 2382704 3276218 3574056 4765408 4914327 6552436 7148112 9828654 13104872 14296224 19657308 26209744 39314616 52419488 78629232 157258464