21332926 has 16 divisors (see below), whose sum is σ = 34117200. Its totient is φ = 9969280.

The previous prime is 21332921. The next prime is 21332939. The reversal of 21332926 is 62923312.

It is a junction number, because it is equal to n+sod(n) for n = 21332894 and 21332903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2961 + ... + 7171.

It is an arithmetic number, because the mean of its divisors is an integer number (2132325).

Almost surely, 2^21332926 is an apocalyptic number.

21332926 is a deficient number, since it is larger than the sum of its proper divisors (12784274).

21332926 is a wasteful number, since it uses less digits than its factorization.

21332926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4379.

The product of its digits is 3888, while the sum is 28.

The square root of 21332926 is about 4618.7580581797. The cubic root of 21332926 is about 277.3427445468.

The spelling of 21332926 in words is "twenty-one million, three hundred thirty-two thousand, nine hundred twenty-six".