20922328 has 16 divisors (see below), whose sum is σ = 44833680. Its totient is φ = 8966688.

The previous prime is 20922323. The next prime is 20922347. The reversal of 20922328 is 82322902.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 20922296 and 20922305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20922323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186751 + ... + 186862.

It is an arithmetic number, because the mean of its divisors is an integer number (2802105).

Almost surely, 2^20922328 is an apocalyptic number.

20922328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20922328 is an abundant number, since it is smaller than the sum of its proper divisors (23911352).

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

20922328 is a wasteful number, since it uses less digits than its factorization.

20922328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373626 (or 373622 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20922328 is about 4574.0931341633. The cubic root of 20922328 is about 275.5518527174.

The spelling of 20922328 in words is "twenty million, nine hundred twenty-two thousand, three hundred twenty-eight".