20486872 has 16 divisors (see below), whose sum is σ = 43900560. Its totient is φ = 8780064.

The previous prime is 20486861. The next prime is 20486891. The reversal of 20486872 is 27868402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182863 + ... + 182974.

It is an arithmetic number, because the mean of its divisors is an integer number (2743785).

Almost surely, 2^20486872 is an apocalyptic number.

It is an amenable number.

20486872 is an abundant number, since it is smaller than the sum of its proper divisors (23413688).

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

20486872 is a wasteful number, since it uses less digits than its factorization.

20486872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365850 (or 365846 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 20486872 is about 4526.2425918194. The cubic root of 20486872 is about 273.6267494907.

The spelling of 20486872 in words is "twenty million, four hundred eighty-six thousand, eight hundred seventy-two".