20572950 has 24 divisors (see below), whose sum is σ = 51021288. Its totient is φ = 5486080.

The previous prime is 20572931. The next prime is 20573011. The reversal of 20572950 is 5927502.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68427 + ... + 68726.

It is an arithmetic number, because the mean of its divisors is an integer number (2125887).

Almost surely, 2^20572950 is an apocalyptic number.

20572950 is an abundant number, since it is smaller than the sum of its proper divisors (30448338).

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

20572950 is a wasteful number, since it uses less digits than its factorization.

20572950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137168 (or 137163 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 20572950 is about 4535.7413947446. The cubic root of 20572950 is about 274.0094389985.

The spelling of 20572950 in words is "twenty million, five hundred seventy-two thousand, nine hundred fifty".