23866538 has 8 divisors (see below), whose sum is σ = 37905732. Its totient is φ = 11231296.

The previous prime is 23866537. The next prime is 23866541. The reversal of 23866538 is 83566832.

It can be written as a sum of positive squares in 2 ways, for example, as 23746129 + 120409 = 4873^2 + 347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×23866538² = 1139223272210888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23866495 and 23866504.

It is not an unprimeable number, because it can be changed into a prime (23866537) 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, 350945 + ... + 351012.

Almost surely, 2^23866538 is an apocalyptic number.

23866538 is a deficient number, since it is larger than the sum of its proper divisors (14039194).

23866538 is a wasteful number, since it uses less digits than its factorization.

23866538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701976.

The product of its digits is 207360, while the sum is 41.

The square root of 23866538 is about 4885.3390875148. The cubic root of 23866538 is about 287.9142379026.

The spelling of 23866538 in words is "twenty-three million, eight hundred sixty-six thousand, five hundred thirty-eight".