20396886 has 16 divisors (see below), whose sum is σ = 40839168. Its totient is φ = 6791400.

The previous prime is 20396867. The next prime is 20396933. The reversal of 20396886 is 68869302.

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, 7671 + ... + 9981.

It is an arithmetic number, because the mean of its divisors is an integer number (2552448).

Almost surely, 2^20396886 is an apocalyptic number.

20396886 is an abundant number, since it is smaller than the sum of its proper divisors (20442282).

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

20396886 is a wasteful number, since it uses less digits than its factorization.

20396886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3787.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 20396886 is about 4516.2911775039. The cubic root of 20396886 is about 273.2255378363.

The spelling of 20396886 in words is "twenty million, three hundred ninety-six thousand, eight hundred eighty-six".