20651932 has 18 divisors (see below), whose sum is σ = 42041832. Its totient is φ = 8850744.

The previous prime is 20651929. The next prime is 20651933. The reversal of 20651932 is 23915602.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 20651932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20651933) 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, 52488 + ... + 52879.

Almost surely, 2^20651932 is an apocalyptic number.

It is an amenable number.

20651932 is an abundant number, since it is smaller than the sum of its proper divisors (21389900).

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

20651932 is a wasteful number, since it uses less digits than its factorization.

20651932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105385 (or 105376 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20651932 is about 4544.4396794324. The cubic root of 20651932 is about 274.3596428223.

The spelling of 20651932 in words is "twenty million, six hundred fifty-one thousand, nine hundred thirty-two".