21320702 has 12 divisors (see below), whose sum is σ = 34630920. Its totient is φ = 9840168.

The previous prime is 21320683. The next prime is 21320743. The reversal of 21320702 is 20702312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31202 + ... + 31877.

It is an arithmetic number, because the mean of its divisors is an integer number (2885910).

Almost surely, 2^21320702 is an apocalyptic number.

21320702 is a deficient number, since it is larger than the sum of its proper divisors (13310218).

21320702 is a wasteful number, since it uses less digits than its factorization.

21320702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63107 (or 63094 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 21320702 is about 4617.4345691087. The cubic root of 21320702 is about 277.2897609498.

It can be divided in two parts, 21320 and 702, that added together give a palindrome (22022).

The spelling of 21320702 in words is "twenty-one million, three hundred twenty thousand, seven hundred two".