22752018 has 24 divisors (see below), whose sum is σ = 52196508. Its totient is φ = 7137792.

The previous prime is 22752017. The next prime is 22752019. The reversal of 22752018 is 81025722.

It is an interprime number because it is at equal distance from previous prime (22752017) and next prime (22752019).

It can be written as a sum of positive squares in 2 ways, for example, as 21095649 + 1656369 = 4593^2 + 1287^2 .

It is a super-3 number, since 3×22752018³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22751982 and 22752000.

It is not an unprimeable number, because it can be changed into a prime (22752013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36871 + ... + 37482.

Almost surely, 2^22752018 is an apocalyptic number.

22752018 is an abundant number, since it is smaller than the sum of its proper divisors (29444490).

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

22752018 is a wasteful number, since it uses less digits than its factorization.

22752018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74378 (or 74375 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 22752018 is about 4769.9075462738. The cubic root of 22752018 is about 283.3609332591.

The spelling of 22752018 in words is "twenty-two million, seven hundred fifty-two thousand, eighteen".