20286804 has 24 divisors (see below), whose sum is σ = 48616288. Its totient is φ = 6579360.

The previous prime is 20286793. The next prime is 20286811. The reversal of 20286804 is 40868202.

It is a happy number.

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, 22402 + ... + 23289.

Almost surely, 2^20286804 is an apocalyptic number.

It is an amenable number.

20286804 is an abundant number, since it is smaller than the sum of its proper divisors (28329484).

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

20286804 is a wasteful number, since it uses less digits than its factorization.

20286804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45735 (or 45733 counting only the distinct ones).

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

The square root of 20286804 is about 4504.0874769480. The cubic root of 20286804 is about 272.7331181373.

The spelling of 20286804 in words is "twenty million, two hundred eighty-six thousand, eight hundred four".