20413880 has 32 divisors (see below), whose sum is σ = 47930400. Its totient is φ = 7810176.

The previous prime is 20413873. The next prime is 20413891. The reversal of 20413880 is 8831402.

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, 10175 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (1497825).

Almost surely, 2^20413880 is an apocalyptic number.

20413880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20413880 is an abundant number, since it is smaller than the sum of its proper divisors (27516520).

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

20413880 is a wasteful number, since it uses less digits than its factorization.

20413880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22223 (or 22219 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 20413880 is about 4518.1721968070. The cubic root of 20413880 is about 273.3013975511.

The spelling of 20413880 in words is "twenty million, four hundred thirteen thousand, eight hundred eighty".