20652630 has 32 divisors (see below), whose sum is σ = 49690368. Its totient is φ = 5493600.

The previous prime is 20652629. The next prime is 20652647. The reversal of 20652630 is 3625602.

It is a super-2 number, since 2×20652630² = 853062251833800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20652630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18385 + ... + 19475.

It is an arithmetic number, because the mean of its divisors is an integer number (1552824).

Almost surely, 2^20652630 is an apocalyptic number.

20652630 is an abundant number, since it is smaller than the sum of its proper divisors (29037738).

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

20652630 is a wasteful number, since it uses less digits than its factorization.

20652630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20652630 is about 4544.5164759301. The cubic root of 20652630 is about 274.3627337497.

The spelling of 20652630 in words is "twenty million, six hundred fifty-two thousand, six hundred thirty".