22075590 has 16 divisors (see below), whose sum is σ = 52981488. Its totient is φ = 5886816.

The previous prime is 22075553. The next prime is 22075591. The reversal of 22075590 is 9557022.

It is a happy number.

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: 735853 = 22075590 / (2 + 2 + 0 + 7 + 5 + 5 + 9 + 0).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22075591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367897 + ... + 367956.

It is an arithmetic number, because the mean of its divisors is an integer number (3311343).

Almost surely, 2^22075590 is an apocalyptic number.

22075590 is an abundant number, since it is smaller than the sum of its proper divisors (30905898).

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

22075590 is a wasteful number, since it uses less digits than its factorization.

22075590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735863.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 22075590 is about 4698.4667711925. The cubic root of 22075590 is about 280.5244846303.

The spelling of 22075590 in words is "twenty-two million, seventy-five thousand, five hundred ninety".