20955250 has 32 divisors (see below), whose sum is σ = 39639600. Its totient is φ = 8294400.

The previous prime is 20955241. The next prime is 20955251. The reversal of 20955250 is 5255902.

It can be written as a sum of positive squares in 8 ways, for example, as 1054729 + 19900521 = 1027^2 + 4461^2 .

It is not an unprimeable number, because it can be changed into a prime (20955251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26866 + ... + 27634.

Almost surely, 2^20955250 is an apocalyptic number.

20955250 is a deficient number, since it is larger than the sum of its proper divisors (18684350).

20955250 is a wasteful number, since it uses less digits than its factorization.

20955250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 20955250 is about 4577.6904657261. The cubic root of 20955250 is about 275.6963070699.

The spelling of 20955250 in words is "twenty million, nine hundred fifty-five thousand, two hundred fifty".