123578856 has 48 divisors (see below), whose sum is σ = 335212800. Its totient is φ = 41128992.

The previous prime is 123578789. The next prime is 123578857. The reversal of 123578856 is 658875321.

123578856 is a `hidden beast` number, since 1 + 23 + 578 + 8 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (123578857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77475 + ... + 79053.

It is an arithmetic number, because the mean of its divisors is an integer number (6983600).

Almost surely, 2^123578856 is an apocalyptic number.

It is an amenable number.

123578856 is an abundant number, since it is smaller than the sum of its proper divisors (211633944).

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

123578856 is a wasteful number, since it uses less digits than its factorization.

123578856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678 (or 2671 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 123578856 is about 11116.6027184567. The cubic root of 123578856 is about 498.0979146515.

The spelling of 123578856 in words is "one hundred twenty-three million, five hundred seventy-eight thousand, eight hundred fifty-six".