20450970 has 24 divisors (see below), whose sum is σ = 53172756. Its totient is φ = 5453568.

The previous prime is 20450939. The next prime is 20450981. The reversal of 20450970 is 7905402.

It can be written as a sum of positive squares in 2 ways, for example, as 17816841 + 2634129 = 4221^2 + 1623^2 .

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 113527 + ... + 113706.

Almost surely, 2^20450970 is an apocalyptic number.

20450970 is an abundant number, since it is smaller than the sum of its proper divisors (32721786).

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

20450970 is a wasteful number, since it uses less digits than its factorization.

20450970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227246 (or 227243 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20450970 is about 4522.2748700184. The cubic root of 20450970 is about 273.4668179394.

The spelling of 20450970 in words is "twenty million, four hundred fifty thousand, nine hundred seventy".