22065390 has 24 divisors (see below), whose sum is σ = 57370248. Its totient is φ = 5884080.

The previous prime is 22065389. The next prime is 22065443. The reversal of 22065390 is 9356022.

22065390 is a `hidden beast` number, since 2 + 2 + 0 + 653 + 9 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122496 + ... + 122675.

It is an arithmetic number, because the mean of its divisors is an integer number (2390427).

Almost surely, 2^22065390 is an apocalyptic number.

22065390 is an abundant number, since it is smaller than the sum of its proper divisors (35304858).

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

22065390 is a wasteful number, since it uses less digits than its factorization.

22065390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245184 (or 245181 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 22065390 is about 4697.3811852989. The cubic root of 22065390 is about 280.4812726399.

The spelling of 22065390 in words is "twenty-two million, sixty-five thousand, three hundred ninety".