23213288 has 32 divisors (see below), whose sum is σ = 52363200. Its totient is φ = 9424512.

The previous prime is 23213273. The next prime is 23213291. The reversal of 23213288 is 88231232.

It is a self number, because there is not a number n which added to its sum of digits gives 23213288.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9845 + ... + 11972.

It is an arithmetic number, because the mean of its divisors is an integer number (1636350).

Almost surely, 2^23213288 is an apocalyptic number.

23213288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23213288 is an abundant number, since it is smaller than the sum of its proper divisors (29149912).

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

23213288 is a wasteful number, since it uses less digits than its factorization.

23213288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21849 (or 21845 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 23213288 is about 4818.0170194801. The cubic root of 23213288 is about 285.2630709363.

The spelling of 23213288 in words is "twenty-three million, two hundred thirteen thousand, two hundred eighty-eight".