20922492 has 48 divisors (see below), whose sum is σ = 50585472. Its totient is φ = 6726720.

The previous prime is 20922491. The next prime is 20922523. The reversal of 20922492 is 29422902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20922491) 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 15 ways as a sum of consecutive naturals, for example, 42367 + ... + 42857.

It is an arithmetic number, because the mean of its divisors is an integer number (1053864).

Almost surely, 2^20922492 is an apocalyptic number.

It is an amenable number.

20922492 is an abundant number, since it is smaller than the sum of its proper divisors (29662980).

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

20922492 is a wasteful number, since it uses less digits than its factorization.

20922492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20922492 is about 4574.1110611790. Note that the first 3 decimals coincide. The cubic root of 20922492 is about 275.5525726881.

The spelling of 20922492 in words is "twenty million, nine hundred twenty-two thousand, four hundred ninety-two".