20272900 has 18 divisors (see below), whose sum is σ = 43992410. Its totient is φ = 8109120.

The previous prime is 20272897. The next prime is 20272919. The reversal of 20272900 is 927202.

It can be written as a sum of positive squares in 3 ways, for example, as 5419584 + 14853316 = 2328^2 + 3854^2 .

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, 101265 + ... + 101464.

Almost surely, 2^20272900 is an apocalyptic number.

20272900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20272900 is an abundant number, since it is smaller than the sum of its proper divisors (23719510).

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

20272900 is a wasteful number, since it uses less digits than its factorization.

20272900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202743 (or 202736 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 20272900 is about 4502.5437254956. The cubic root of 20272900 is about 272.6707960497.

The spelling of 20272900 in words is "twenty million, two hundred seventy-two thousand, nine hundred".