20204886 has 32 divisors (see below), whose sum is σ = 44700768. Its totient is φ = 6048000.

The previous prime is 20204861. The next prime is 20204903. The reversal of 20204886 is 68840202.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (1396899).

Almost surely, 2^20204886 is an apocalyptic number.

20204886 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20204886 is an abundant number, since it is smaller than the sum of its proper divisors (24495882).

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

20204886 is a wasteful number, since it uses less digits than its factorization.

20204886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7056.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 20204886 is about 4494.9845383494. The cubic root of 20204886 is about 272.3655246486.

The spelling of 20204886 in words is "twenty million, two hundred four thousand, eight hundred eighty-six".