23947856 has 10 divisors (see below), whose sum is σ = 46399002. Its totient is φ = 11973920.

The previous prime is 23947829. The next prime is 23947901. The reversal of 23947856 is 65874932.

It can be written as a sum of positive squares in only one way, i.e., 20106256 + 3841600 = 4484^2 + 1960^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 748355 + ... + 748386.

Almost surely, 2^23947856 is an apocalyptic number.

It is an amenable number.

23947856 is a deficient number, since it is larger than the sum of its proper divisors (22451146).

23947856 is a wasteful number, since it uses less digits than its factorization.

23947856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496749 (or 1496743 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 23947856 is about 4893.6546670152. The cubic root of 23947856 is about 288.2408607495.

The spelling of 23947856 in words is "twenty-three million, nine hundred forty-seven thousand, eight hundred fifty-six".