21310796 has 12 divisors (see below), whose sum is σ = 40162752. Its totient is φ = 9835728.

The previous prime is 21310771. The next prime is 21310801. The reversal of 21310796 is 69701312.

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 3 ways as a sum of consecutive naturals, for example, 204860 + ... + 204963.

It is an arithmetic number, because the mean of its divisors is an integer number (3346896).

Almost surely, 2^21310796 is an apocalyptic number.

21310796 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21310796 is a deficient number, since it is larger than the sum of its proper divisors (18851956).

21310796 is a wasteful number, since it uses less digits than its factorization.

21310796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409840 (or 409838 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 21310796 is about 4616.3617709187. The cubic root of 21310796 is about 277.2468096140.

The spelling of 21310796 in words is "twenty-one million, three hundred ten thousand, seven hundred ninety-six".