23890120 has 16 divisors (see below), whose sum is σ = 53752860. Its totient is φ = 9556032.

The previous prime is 23890081. The next prime is 23890133. The reversal of 23890120 is 2109832.

It can be written as a sum of positive squares in 2 ways, for example, as 20196036 + 3694084 = 4494^2 + 1922^2 .

It is a super-2 number, since 2×23890120² = 1141475667228800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298587 + ... + 298666.

Almost surely, 2^23890120 is an apocalyptic number.

23890120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23890120 is an abundant number, since it is smaller than the sum of its proper divisors (29862740).

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

23890120 is a wasteful number, since it uses less digits than its factorization.

23890120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597264 (or 597260 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 23890120 is about 4887.7520395372. The cubic root of 23890120 is about 288.0090339244.

Adding to 23890120 its reverse (2109832), we get a palindrome (25999952).

The spelling of 23890120 in words is "twenty-three million, eight hundred ninety thousand, one hundred twenty".