20650634 has 16 divisors (see below), whose sum is σ = 32187456. Its totient is φ = 9928800.

The previous prime is 20650607. The next prime is 20650657. The reversal of 20650634 is 43605602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4049 + ... + 7595.

It is an arithmetic number, because the mean of its divisors is an integer number (2011716).

Almost surely, 2^20650634 is an apocalyptic number.

20650634 is a deficient number, since it is larger than the sum of its proper divisors (11536822).

20650634 is a wasteful number, since it uses less digits than its factorization.

20650634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20650634 is about 4544.2968653027. The cubic root of 20650634 is about 274.3538947518.

The spelling of 20650634 in words is "twenty million, six hundred fifty thousand, six hundred thirty-four".