23306490 has 48 divisors (see below), whose sum is σ = 64165608. Its totient is φ = 5849088.

The previous prime is 23306477. The next prime is 23306533. The reversal of 23306490 is 9460332.

It can be written as a sum of positive squares in 4 ways, for example, as 17816841 + 5489649 = 4221^2 + 2343^2 .

It is a super-2 number, since 2×23306490² = 1086384952240200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6087 + ... + 9146.

Almost surely, 2^23306490 is an apocalyptic number.

23306490 is an abundant number, since it is smaller than the sum of its proper divisors (40859118).

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

23306490 is a wasteful number, since it uses less digits than its factorization.

23306490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15263 (or 15260 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 23306490 is about 4827.6795668313. The cubic root of 23306490 is about 285.6443408546.

The spelling of 23306490 in words is "twenty-three million, three hundred six thousand, four hundred ninety".