20412860 has 24 divisors (see below), whose sum is σ = 46165056. Its totient is φ = 7536960.

The previous prime is 20412817. The next prime is 20412871. The reversal of 20412860 is 6821402.

It is a plaindrome in base 16.

It is a congruent number.

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, 38996 + ... + 39515.

It is an arithmetic number, because the mean of its divisors is an integer number (1923544).

Almost surely, 2^20412860 is an apocalyptic number.

20412860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20412860 is an abundant number, since it is smaller than the sum of its proper divisors (25752196).

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

20412860 is a wasteful number, since it uses less digits than its factorization.

20412860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78533 (or 78531 counting only the distinct ones).

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

The square root of 20412860 is about 4518.0593178930. The cubic root of 20412860 is about 273.2968455491.

The spelling of 20412860 in words is "twenty million, four hundred twelve thousand, eight hundred sixty".