20786892 has 24 divisors (see below), whose sum is σ = 55431936. Its totient is φ = 5939088.

The previous prime is 20786879. The next prime is 20786921. The reversal of 20786892 is 29868702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 123648 + ... + 123815.

It is an arithmetic number, because the mean of its divisors is an integer number (2309664).

Almost surely, 2^20786892 is an apocalyptic number.

It is an amenable number.

20786892 is an abundant number, since it is smaller than the sum of its proper divisors (34645044).

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

20786892 is a wasteful number, since it uses less digits than its factorization.

20786892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247477 (or 247475 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 20786892 is about 4559.2644143546. The cubic root of 20786892 is about 274.9559907536.

The spelling of 20786892 in words is "twenty million, seven hundred eighty-six thousand, eight hundred ninety-two".