23539970 has 16 divisors (see below), whose sum is σ = 42432120. Its totient is φ = 9402624.

The previous prime is 23539949. The next prime is 23539973. The reversal of 23539970 is 7993532.

It can be written as a sum of positive squares in 4 ways, for example, as 15077689 + 8462281 = 3883^2 + 2909^2 .

It is not an unprimeable number, because it can be changed into a prime (23539973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8924 + ... + 11256.

Almost surely, 2^23539970 is an apocalyptic number.

23539970 is a deficient number, since it is larger than the sum of its proper divisors (18892150).

23539970 is a wasteful number, since it uses less digits than its factorization.

23539970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349.

The product of its (nonzero) digits is 51030, while the sum is 38.

The square root of 23539970 is about 4851.8006966486. The cubic root of 23539970 is about 286.5950169470.

The spelling of 23539970 in words is "twenty-three million, five hundred thirty-nine thousand, nine hundred seventy".