22742312 has 8 divisors (see below), whose sum is σ = 42641850. Its totient is φ = 11371152.

The previous prime is 22742303. The next prime is 22742323. The reversal of 22742312 is 21324722.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22714756 + 27556 = 4766^2 + 166^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1421387 + ... + 1421402.

Almost surely, 2^22742312 is an apocalyptic number.

It is an amenable number.

22742312 is a deficient number, since it is larger than the sum of its proper divisors (19899538).

22742312 is a wasteful number, since it uses less digits than its factorization.

22742312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842795 (or 2842791 counting only the distinct ones).

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

The square root of 22742312 is about 4768.8900176037. The cubic root of 22742312 is about 283.3206336484.

The spelling of 22742312 in words is "twenty-two million, seven hundred forty-two thousand, three hundred twelve".