20412680 has 32 divisors (see below), whose sum is σ = 46410840. Its totient is φ = 8079360.

The previous prime is 20412677. The next prime is 20412697. The reversal of 20412680 is 8621402.

It can be written as a sum of positive squares in 4 ways, for example, as 17859076 + 2553604 = 4226^2 + 1598^2 .

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, 1250 + ... + 6510.

Almost surely, 2^20412680 is an apocalyptic number.

20412680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20412680 is an abundant number, since it is smaller than the sum of its proper divisors (25998160).

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

20412680 is a wasteful number, since it uses less digits than its factorization.

20412680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369 (or 5365 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20412680 is about 4518.0393977919. The cubic root of 20412680 is about 273.2960422389.

The spelling of 20412680 in words is "twenty million, four hundred twelve thousand, six hundred eighty".