22718452 has 18 divisors (see below), whose sum is σ = 41962578. Its totient is φ = 10760688.

The previous prime is 22718431. The next prime is 22718453. The reversal of 22718452 is 25481722.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15023376 + 7695076 = 3876^2 + 2774^2 .

It is a super-2 number, since 2×22718452² = 1032256122552608, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22718453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6423 + ... + 9310.

Almost surely, 2^22718452 is an apocalyptic number.

It is an amenable number.

22718452 is a deficient number, since it is larger than the sum of its proper divisors (19244126).

22718452 is a wasteful number, since it uses less digits than its factorization.

22718452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15775 (or 15754 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 22718452 is about 4766.3877307664. The cubic root of 22718452 is about 283.2215174315.

The spelling of 22718452 in words is "twenty-two million, seven hundred eighteen thousand, four hundred fifty-two".