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157234077 = 327111331563
BaseRepresentation
bin10010101111100…
…11001110011101
3101221212022121100
421113303032131
5310222442302
623334023313
73616316250
oct1127631635
9357768540
10157234077
1180833320
12447a7b39
1326762820
1416c4d097
15dc0cd1c
hex95f339d

157234077 has 96 divisors (see below), whose sum is σ = 315334656. Its totient is φ = 72835200.

The previous prime is 157234061. The next prime is 157234081. The reversal of 157234077 is 770432751.

It is not a de Polignac number, because 157234077 - 24 = 157234061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157234277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 278998 + ... + 279560.

It is an arithmetic number, because the mean of its divisors is an integer number (3284736).

Almost surely, 2157234077 is an apocalyptic number.

It is an amenable number.

157234077 is an abundant number, since it is smaller than the sum of its proper divisors (158100579).

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

157234077 is a wasteful number, since it uses less digits than its factorization.

157234077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 157234077 is about 12539.3012963243. The cubic root of 157234077 is about 539.7370427536.

The spelling of 157234077 in words is "one hundred fifty-seven million, two hundred thirty-four thousand, seventy-seven".

Divisors: 1 3 7 9 11 13 21 31 33 39 63 77 91 93 99 117 143 217 231 273 279 341 403 429 563 651 693 819 1001 1023 1209 1287 1689 1953 2387 2821 3003 3069 3627 3941 4433 5067 6193 7161 7319 8463 9009 11823 13299 17453 18579 21483 21957 25389 31031 35469 39897 43351 51233 52359 55737 65871 80509 93093 122171 130053 153699 157077 191983 226889 241527 279279 366513 390159 461097 563563 575949 680667 724581 1099539 1343881 1588223 1690689 1727847 2042001 2495779 4031643 4764669 5072067 7487337 12094929 14294007 17470453 22462011 52411359 157234077