22274312 has 16 divisors (see below), whose sum is σ = 42043200. Its totient is φ = 11062800.

The previous prime is 22274299. The next prime is 22274341. The reversal of 22274312 is 21347222.

It is a happy number.

It is a super-2 number, since 2×22274312² = 992289950146688, which contains 22 as substring.

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, 8012 + ... + 10427.

It is an arithmetic number, because the mean of its divisors is an integer number (2627700).

Almost surely, 2^22274312 is an apocalyptic number.

It is an amenable number.

22274312 is a deficient number, since it is larger than the sum of its proper divisors (19768888).

22274312 is a wasteful number, since it uses less digits than its factorization.

22274312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18596 (or 18592 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 22274312 is about 4719.5669292849. The cubic root of 22274312 is about 281.3637214517.

The spelling of 22274312 in words is "twenty-two million, two hundred seventy-four thousand, three hundred twelve".