20922960 has 40 divisors (see below), whose sum is σ = 64861920. Its totient is φ = 5579392.

The previous prime is 20922959. The next prime is 20922973. The reversal of 20922960 is 6922902.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 43350 + ... + 43829.

It is an arithmetic number, because the mean of its divisors is an integer number (1621548).

Almost surely, 2^20922960 is an apocalyptic number.

20922960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20922960 is an abundant number, since it is smaller than the sum of its proper divisors (43938960).

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

20922960 is a wasteful number, since it uses less digits than its factorization.

20922960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87195 (or 87189 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20922960 is about 4574.1622183740. The cubic root of 20922960 is about 275.5546272177.

The spelling of 20922960 in words is "twenty million, nine hundred twenty-two thousand, nine hundred sixty".