20867892 has 12 divisors (see below), whose sum is σ = 48691776. Its totient is φ = 6955960.

The previous prime is 20867879. The next prime is 20867911. The reversal of 20867892 is 29876802.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 869484 + ... + 869507.

It is an arithmetic number, because the mean of its divisors is an integer number (4057648).

Almost surely, 2^20867892 is an apocalyptic number.

It is an amenable number.

20867892 is an abundant number, since it is smaller than the sum of its proper divisors (27823884).

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

20867892 is a wasteful number, since it uses less digits than its factorization.

20867892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738998 (or 1738996 counting only the distinct ones).

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

The square root of 20867892 is about 4568.1387894853. The cubic root of 20867892 is about 275.3126669616.

The spelling of 20867892 in words is "twenty million, eight hundred sixty-seven thousand, eight hundred ninety-two".