23902690 has 24 divisors (see below), whose sum is σ = 50050332. Its totient is φ = 8195040.

The previous prime is 23902687. The next prime is 23902717. The reversal of 23902690 is 9620932.

It can be written as a sum of positive squares in 2 ways, for example, as 20766249 + 3136441 = 4557^2 + 1771^2 .

It is a super-2 number, since 2×23902690² = 1142677178472200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23901 + ... + 24880.

Almost surely, 2^23902690 is an apocalyptic number.

23902690 is an abundant number, since it is smaller than the sum of its proper divisors (26147642).

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

23902690 is a wasteful number, since it uses less digits than its factorization.

23902690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48802 (or 48795 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 23902690 is about 4889.0377376330. The cubic root of 23902690 is about 288.0595379096.

The spelling of 23902690 in words is "twenty-three million, nine hundred two thousand, six hundred ninety".