20256200 has 24 divisors (see below), whose sum is σ = 47096130. Its totient is φ = 8102400.

The previous prime is 20256161. The next prime is 20256217. The reversal of 20256200 is 265202.

It can be written as a sum of positive squares in 3 ways, for example, as 8655364 + 11600836 = 2942^2 + 3406^2 .

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 5 ways as a sum of consecutive naturals, for example, 50441 + ... + 50840.

Almost surely, 2^20256200 is an apocalyptic number.

20256200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20256200 is an abundant number, since it is smaller than the sum of its proper divisors (26839930).

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

20256200 is a wasteful number, since it uses less digits than its factorization.

20256200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101297 (or 101288 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 20256200 is about 4500.6888361672. The cubic root of 20256200 is about 272.5959037349.

The spelling of 20256200 in words is "twenty million, two hundred fifty-six thousand, two hundred".