157947656 has 8 divisors (see below), whose sum is σ = 296151870. Its totient is φ = 78973824.

The previous prime is 157947613. The next prime is 157947707. The reversal of 157947656 is 656749751.

It can be written as a sum of positive squares in only one way, i.e., 126922756 + 31024900 = 11266^2 + 5570^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9871721 + ... + 9871736.

Almost surely, 2^157947656 is an apocalyptic number.

It is an amenable number.

157947656 is a deficient number, since it is larger than the sum of its proper divisors (138204214).

157947656 is a wasteful number, since it uses less digits than its factorization.

157947656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19743463 (or 19743459 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 50.

The square root of 157947656 is about 12567.7227849758. The cubic root of 157947656 is about 540.5523109907.

The spelling of 157947656 in words is "one hundred fifty-seven million, nine hundred forty-seven thousand, six hundred fifty-six".