232561978 has 16 divisors (see below), whose sum is σ = 381767904. Its totient is φ = 105373360.

The previous prime is 232561943. The next prime is 232561981. The reversal of 232561978 is 879165232.

It is a super-2 number, since 2×232561978² = 108170147222544968, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9700 + ... + 23647.

It is an arithmetic number, because the mean of its divisors is an integer number (23860494).

Almost surely, 2^232561978 is an apocalyptic number.

232561978 is a deficient number, since it is larger than the sum of its proper divisors (149205926).

232561978 is a wasteful number, since it uses less digits than its factorization.

232561978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33677.

The product of its digits is 181440, while the sum is 43.

The square root of 232561978 is about 15249.9828852363. The cubic root of 232561978 is about 614.9591071583.

The spelling of 232561978 in words is "two hundred thirty-two million, five hundred sixty-one thousand, nine hundred seventy-eight".