20620572 has 36 divisors (see below), whose sum is σ = 55971720. Its totient is φ = 5891424.

The previous prime is 20620571. The next prime is 20620573. The reversal of 20620572 is 27502602.

It is an interprime number because it is at equal distance from previous prime (20620571) and next prime (20620573).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16947 + ... + 18122.

It is an arithmetic number, because the mean of its divisors is an integer number (1554770).

Almost surely, 2^20620572 is an apocalyptic number.

It is an amenable number.

20620572 is an abundant number, since it is smaller than the sum of its proper divisors (35351148).

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

20620572 is a wasteful number, since it uses less digits than its factorization.

20620572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35090 (or 35081 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20620572 is about 4540.9879982224. The cubic root of 20620572 is about 274.2207005819.

The spelling of 20620572 in words is "twenty million, six hundred twenty thousand, five hundred seventy-two".