20112684 has 24 divisors (see below), whose sum is σ = 47034288. Its totient is φ = 6689280.

The previous prime is 20112661. The next prime is 20112721. The reversal of 20112684 is 48621102.

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, 4644 + ... + 7860.

It is an arithmetic number, because the mean of its divisors is an integer number (1959762).

Almost surely, 2^20112684 is an apocalyptic number.

It is an amenable number.

20112684 is an abundant number, since it is smaller than the sum of its proper divisors (26921604).

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

20112684 is a wasteful number, since it uses less digits than its factorization.

20112684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745 (or 3743 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 20112684 is about 4484.7167134614. The cubic root of 20112684 is about 271.9505929580.

Adding to 20112684 its reverse (48621102), we get a palindrome (68733786).

The spelling of 20112684 in words is "twenty million, one hundred twelve thousand, six hundred eighty-four".