21337896 has 32 divisors (see below), whose sum is σ = 53467200. Its totient is φ = 7096320.

The previous prime is 21337891. The next prime is 21337913. The reversal of 21337896 is 69873312.

It is not an unprimeable number, because it can be changed into a prime (21337891) by changing a digit.

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, 14440 + ... + 15848.

It is an arithmetic number, because the mean of its divisors is an integer number (1670850).

Almost surely, 2^21337896 is an apocalyptic number.

It is an amenable number.

21337896 is an abundant number, since it is smaller than the sum of its proper divisors (32129304).

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

21337896 is a wasteful number, since it uses less digits than its factorization.

21337896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049 (or 2045 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 21337896 is about 4619.2960502657. The cubic root of 21337896 is about 277.3642806832.

The spelling of 21337896 in words is "twenty-one million, three hundred thirty-seven thousand, eight hundred ninety-six".