23278856 has 16 divisors (see below), whose sum is σ = 43699500. Its totient is φ = 11625664.

The previous prime is 23278837. The next prime is 23278859. The reversal of 23278856 is 65887232.

It can be written as a sum of positive squares in 2 ways, for example, as 20160100 + 3118756 = 4490^2 + 1766^2 .

It is not an unprimeable number, because it can be changed into a prime (23278859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10970 + ... + 12918.

Almost surely, 2^23278856 is an apocalyptic number.

It is an amenable number.

23278856 is a deficient number, since it is larger than the sum of its proper divisors (20420644).

23278856 is a wasteful number, since it uses less digits than its factorization.

23278856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448 (or 3444 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 23278856 is about 4824.8166804553. The cubic root of 23278856 is about 285.5314021054.

The spelling of 23278856 in words is "twenty-three million, two hundred seventy-eight thousand, eight hundred fifty-six".