20256360 has 32 divisors (see below), whose sum is σ = 60769440. Its totient is φ = 5401664.

The previous prime is 20256359. The next prime is 20256377. The reversal of 20256360 is 6365202.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20256360.

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, 84282 + ... + 84521.

It is an arithmetic number, because the mean of its divisors is an integer number (1899045).

Almost surely, 2^20256360 is an apocalyptic number.

20256360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20256360 is an abundant number, since it is smaller than the sum of its proper divisors (40513080).

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

20256360 is a wasteful number, since it uses less digits than its factorization.

20256360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168817 (or 168813 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20256360 is about 4500.7066111890. The cubic root of 20256360 is about 272.5966214613.

It can be divided in two parts, 2025 and 6360, that added together give a triangular number (8385 = T₁₂₉).

The spelling of 20256360 in words is "twenty million, two hundred fifty-six thousand, three hundred sixty".