20652560 has 20 divisors (see below), whose sum is σ = 48017388. Its totient is φ = 8260992.

The previous prime is 20652559. The next prime is 20652571. The reversal of 20652560 is 6525602.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7139584 + 13512976 = 2672^2 + 3676^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128999 + ... + 129158.

Almost surely, 2^20652560 is an apocalyptic number.

20652560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20652560 is an abundant number, since it is smaller than the sum of its proper divisors (27364828).

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

20652560 is a wasteful number, since it uses less digits than its factorization.

20652560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258170 (or 258164 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20652560 is about 4544.5087743341. The cubic root of 20652560 is about 274.3624237745.

It can be divided in two parts, 20652 and 560, that added together give a palindrome (21212).

The spelling of 20652560 in words is "twenty million, six hundred fifty-two thousand, five hundred sixty".