22000008 has 32 divisors (see below), whose sum is σ = 55409760. Its totient is φ = 7278720.

The previous prime is 22000003. The next prime is 22000021. The reversal of 22000008 is 80000022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 21999957 and 22000002.

It is not an unprimeable number, because it can be changed into a prime (22000001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58 + ... + 6633.

It is an arithmetic number, because the mean of its divisors is an integer number (1731555).

Almost surely, 2^22000008 is an apocalyptic number.

It is an amenable number.

22000008 is an abundant number, since it is smaller than the sum of its proper divisors (33409752).

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

22000008 is a wasteful number, since it uses less digits than its factorization.

22000008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6837 (or 6833 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 22000008 is about 4690.4166126262. The cubic root of 22000008 is about 280.2039670296.

The spelling of 22000008 in words is "twenty-two million, eight", and thus it is an aban number and an uban number.