22039590 has 16 divisors (see below), whose sum is σ = 52895088. Its totient is φ = 5877216.

The previous prime is 22039579. The next prime is 22039603. The reversal of 22039590 is 9593022.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 734653 = 22039590 / (2 + 2 + 0 + 3 + 9 + 5 + 9 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367297 + ... + 367356.

It is an arithmetic number, because the mean of its divisors is an integer number (3305943).

Almost surely, 2^22039590 is an apocalyptic number.

22039590 is an abundant number, since it is smaller than the sum of its proper divisors (30855498).

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

22039590 is a wasteful number, since it uses less digits than its factorization.

22039590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734663.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 22039590 is about 4694.6341710510. The cubic root of 22039590 is about 280.3719122484.

The spelling of 22039590 in words is "twenty-two million, thirty-nine thousand, five hundred ninety".