21233392 has 40 divisors (see below), whose sum is σ = 42497280. Its totient is φ = 10272960.

The previous prime is 21233389. The next prime is 21233411. The reversal of 21233392 is 29333212.

It is a congruent number.

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, 78217 + ... + 78487.

It is an arithmetic number, because the mean of its divisors is an integer number (1062432).

Almost surely, 2^21233392 is an apocalyptic number.

It is an amenable number.

21233392 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

21233392 is a wasteful number, since it uses less digits than its factorization.

21233392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 415 counting only the distinct ones).

The product of its digits is 1944, while the sum is 25.

The square root of 21233392 is about 4607.9704860166. The cubic root of 21233392 is about 276.9107350942.

The spelling of 21233392 in words is "twenty-one million, two hundred thirty-three thousand, three hundred ninety-two".