22222992 has 40 divisors (see below), whose sum is σ = 62629920. Its totient is φ = 6734080.

The previous prime is 22222987. The next prime is 22222997. The reversal of 22222992 is 29922222.

It is an interprime number because it is at equal distance from previous prime (22222987) and next prime (22222997).

It is a super-2 number, since 2×22222992² = 987722746864128, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22222997) 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, 20517 + ... + 21572.

It is an arithmetic number, because the mean of its divisors is an integer number (1565748).

Almost surely, 2^22222992 is an apocalyptic number.

22222992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22222992 is an abundant number, since it is smaller than the sum of its proper divisors (40406928).

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

22222992 is a wasteful number, since it uses less digits than its factorization.

22222992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42111 (or 42105 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 22222992 is about 4714.1268544663. The cubic root of 22222992 is about 281.1474680084.

The spelling of 22222992 in words is "twenty-two million, two hundred twenty-two thousand, nine hundred ninety-two".