23539972 has 6 divisors (see below), whose sum is σ = 41194958. Its totient is φ = 11769984.

The previous prime is 23539949. The next prime is 23539973. The reversal of 23539972 is 27993532.

It is a happy number.

23539972 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in only one way, i.e., 19945156 + 3594816 = 4466^2 + 1896^2 .

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 as a sum of consecutive naturals, namely, 2942493 + ... + 2942500.

Almost surely, 2^23539972 is an apocalyptic number.

It is an amenable number.

23539972 is a deficient number, since it is larger than the sum of its proper divisors (17654986).

23539972 is a wasteful number, since it uses less digits than its factorization.

23539972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884997 (or 5884995 counting only the distinct ones).

The product of its digits is 102060, while the sum is 40.

The square root of 23539972 is about 4851.8009027577. The cubic root of 23539972 is about 286.5950250635.

The spelling of 23539972 in words is "twenty-three million, five hundred thirty-nine thousand, nine hundred seventy-two".