20264940 has 36 divisors (see below), whose sum is σ = 61470864. Its totient is φ = 5403936.

The previous prime is 20264929. The next prime is 20264977. The reversal of 20264940 is 4946202.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56112 + ... + 56471.

It is an arithmetic number, because the mean of its divisors is an integer number (1707524).

Almost surely, 2^20264940 is an apocalyptic number.

20264940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20264940 is an abundant number, since it is smaller than the sum of its proper divisors (41205924).

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

20264940 is a wasteful number, since it uses less digits than its factorization.

20264940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112598 (or 112593 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20264940 is about 4501.6596939351. The cubic root of 20264940 is about 272.6351040064.

The spelling of 20264940 in words is "twenty million, two hundred sixty-four thousand, nine hundred forty".