20631796 has 12 divisors (see below), whose sum is σ = 38006080. Its totient is φ = 9772920.

The previous prime is 20631781. The next prime is 20631797. The reversal of 20631796 is 69713602.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20631797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135660 + ... + 135811.

Almost surely, 2^20631796 is an apocalyptic number.

It is an amenable number.

20631796 is a deficient number, since it is larger than the sum of its proper divisors (17374284).

20631796 is a wasteful number, since it uses less digits than its factorization.

20631796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271494 (or 271492 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 20631796 is about 4542.2236844964. The cubic root of 20631796 is about 274.2704453202.

The spelling of 20631796 in words is "twenty million, six hundred thirty-one thousand, seven hundred ninety-six".