20980250 has 16 divisors (see below), whose sum is σ = 39275496. Its totient is φ = 8392000.

The previous prime is 20980247. The next prime is 20980277. The reversal of 20980250 is 5208902.

It can be written as a sum of positive squares in 4 ways, for example, as 12794929 + 8185321 = 3577^2 + 2861^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41711 + ... + 42210.

Almost surely, 2^20980250 is an apocalyptic number.

20980250 is a deficient number, since it is larger than the sum of its proper divisors (18295246).

20980250 is an equidigital number, since it uses as much as digits as its factorization.

20980250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83938 (or 83928 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 20980250 is about 4580.4202863929. The cubic root of 20980250 is about 275.8059004267.

The spelling of 20980250 in words is "twenty million, nine hundred eighty thousand, two hundred fifty".