157159728 has 120 divisors (see below), whose sum is σ = 490254336. Its totient is φ = 46588800.

The previous prime is 157159727. The next prime is 157159733. The reversal of 157159728 is 827951751.

157159728 is a `hidden beast` number, since 1 + 57 + 1 + 597 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (157159727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73393 + ... + 75503.

Almost surely, 2^157159728 is an apocalyptic number.

157159728 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 157159728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245127168).

157159728 is an abundant number, since it is smaller than the sum of its proper divisors (333094608).

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

157159728 is a wasteful number, since it uses less digits than its factorization.

157159728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183 (or 2174 counting only the distinct ones).

The product of its digits is 176400, while the sum is 45.

The square root of 157159728 is about 12536.3363069120. The cubic root of 157159728 is about 539.6519567958.

The spelling of 157159728 in words is "one hundred fifty-seven million, one hundred fifty-nine thousand, seven hundred twenty-eight".