20922704 has 40 divisors (see below), whose sum is σ = 45077472. Its totient is φ = 9326720.

The previous prime is 20922703. The next prime is 20922721. The reversal of 20922704 is 40722902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20922703) 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, 8207 + ... + 10449.

Almost surely, 2^20922704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20922704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22538736).

20922704 is an abundant number, since it is smaller than the sum of its proper divisors (24154768).

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

20922704 is a wasteful number, since it uses less digits than its factorization.

20922704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315 (or 2309 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20922704 is about 4574.1342350220. The cubic root of 20922704 is about 275.5535033762.

The spelling of 20922704 in words is "twenty million, nine hundred twenty-two thousand, seven hundred four".