20680032 has 24 divisors (see below), whose sum is σ = 54285336. Its totient is φ = 6893312.

The previous prime is 20680027. The next prime is 20680039. The reversal of 20680032 is 23008602.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 20679990 and 20680008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20680039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107613 + ... + 107804.

It is an arithmetic number, because the mean of its divisors is an integer number (2261889).

Almost surely, 2^20680032 is an apocalyptic number.

It is an amenable number.

20680032 is an abundant number, since it is smaller than the sum of its proper divisors (33605304).

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

20680032 is a wasteful number, since it uses less digits than its factorization.

20680032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215430 (or 215422 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20680032 is about 4547.5303187554. The cubic root of 20680032 is about 274.4840220162.

Adding to 20680032 its reverse (23008602), we get a palindrome (43688634).

The spelling of 20680032 in words is "twenty million, six hundred eighty thousand, thirty-two".