157730256 has 30 divisors (see below), whose sum is σ = 441426050. Its totient is φ = 52576704.

The previous prime is 157730249. The next prime is 157730257. The reversal of 157730256 is 652037751.

157730256 is a `hidden beast` number, since 1 + 577 + 30 + 2 + 56 = 666.

157730256 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 135489600 + 22240656 = 11640^2 + 4716^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 157730256.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157730257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 547531 + ... + 547818.

Almost surely, 2^157730256 is an apocalyptic number.

157730256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

157730256 is an abundant number, since it is smaller than the sum of its proper divisors (283695794).

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

157730256 is a wasteful number, since it uses less digits than its factorization.

157730256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095363 (or 1095354 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The square root of 157730256 is about 12559.0706662555. The cubic root of 157730256 is about 540.3041907522.

The spelling of 157730256 in words is "one hundred fifty-seven million, seven hundred thirty thousand, two hundred fifty-six".