20320632 has 48 divisors (see below), whose sum is σ = 57078840. Its totient is φ = 6772896.

The previous prime is 20320609. The next prime is 20320669. The reversal of 20320632 is 23602302.

20320632 is a `hidden beast` number, since 2 + 0 + 32 + 0 + 632 = 666.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3283 + ... + 7170.

Almost surely, 2^20320632 is an apocalyptic number.

It is an amenable number.

20320632 is an abundant number, since it is smaller than the sum of its proper divisors (36758208).

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

20320632 is a wasteful number, since it uses less digits than its factorization.

20320632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474 (or 10458 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 20320632 is about 4507.8411684530. The cubic root of 20320632 is about 272.8846270127.

Adding to 20320632 its reverse (23602302), we get a palindrome (43922934).

The spelling of 20320632 in words is "twenty million, three hundred twenty thousand, six hundred thirty-two".