22039418 has 8 divisors (see below), whose sum is σ = 33204180. Its totient is φ = 10971360.

The previous prime is 22039417. The next prime is 22039421. The reversal of 22039418 is 81493022.

It can be written as a sum of positive squares in 2 ways, for example, as 19070689 + 2968729 = 4367^2 + 1723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22039417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23603 + ... + 24518.

Almost surely, 2^22039418 is an apocalyptic number.

22039418 is a deficient number, since it is larger than the sum of its proper divisors (11164762).

22039418 is a wasteful number, since it uses less digits than its factorization.

22039418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48352.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 22039418 is about 4694.6158522290. The cubic root of 22039418 is about 280.3711828928.

The spelling of 22039418 in words is "twenty-two million, thirty-nine thousand, four hundred eighteen".