23490816 has 72 divisors (see below), whose sum is σ = 63527520. Its totient is φ = 7704576.

The previous prime is 23490769. The next prime is 23490833. The reversal of 23490816 is 61809432.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55855 + ... + 56273.

Almost surely, 2^23490816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23490816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31763760).

23490816 is an abundant number, since it is smaller than the sum of its proper divisors (40036704).

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

23490816 is an equidigital number, since it uses as much as digits as its factorization.

23490816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 23490816 is about 4846.7325075766. The cubic root of 23490816 is about 286.3953974896.

The spelling of 23490816 in words is "twenty-three million, four hundred ninety thousand, eight hundred sixteen".