21337352 has 16 divisors (see below), whose sum is σ = 40255440. Its totient is φ = 10602576.

The previous prime is 21337297. The next prime is 21337367. The reversal of 21337352 is 25373312.

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, 6878 + ... + 9485.

It is an arithmetic number, because the mean of its divisors is an integer number (2515965).

Almost surely, 2^21337352 is an apocalyptic number.

It is an amenable number.

21337352 is a deficient number, since it is larger than the sum of its proper divisors (18918088).

21337352 is a wasteful number, since it uses less digits than its factorization.

21337352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16532 (or 16528 counting only the distinct ones).

The product of its digits is 3780, while the sum is 26.

The square root of 21337352 is about 4619.2371664594. The cubic root of 21337352 is about 277.3619235709.

The spelling of 21337352 in words is "twenty-one million, three hundred thirty-seven thousand, three hundred fifty-two".