20652650 has 12 divisors (see below), whose sum is σ = 38414022. Its totient is φ = 8261040.

The previous prime is 20652647. The next prime is 20652659. The reversal of 20652650 is 5625602.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 15531481 + 5121169 = 3941^2 + 2263^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20652659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206477 + ... + 206576.

Almost surely, 2^20652650 is an apocalyptic number.

20652650 is a deficient number, since it is larger than the sum of its proper divisors (17761372).

20652650 is a wasteful number, since it uses less digits than its factorization.

20652650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413065 (or 413060 counting only the distinct ones).

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

The square root of 20652650 is about 4544.5186763837. The cubic root of 20652650 is about 274.3628223140.

The spelling of 20652650 in words is "twenty million, six hundred fifty-two thousand, six hundred fifty".