22718036 has 12 divisors (see below), whose sum is σ = 43370880. Its totient is φ = 10326360.

The previous prime is 22718027. The next prime is 22718041. The reversal of 22718036 is 63081722.

It is a happy number.

It is a super-2 number, since 2×22718036² = 1032218319394592, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 258116 + ... + 258203.

It is an arithmetic number, because the mean of its divisors is an integer number (3614240).

Almost surely, 2^22718036 is an apocalyptic number.

It is an amenable number.

22718036 is a deficient number, since it is larger than the sum of its proper divisors (20652844).

22718036 is a wasteful number, since it uses less digits than its factorization.

22718036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516334 (or 516332 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 22718036 is about 4766.3440916493. The cubic root of 22718036 is about 283.2197887212.

Adding to 22718036 its reverse (63081722), we get a palindrome (85799758).

The spelling of 22718036 in words is "twenty-two million, seven hundred eighteen thousand, thirty-six".