22142390 has 16 divisors (see below), whose sum is σ = 40510800. Its totient is φ = 8711520.

The previous prime is 22142387. The next prime is 22142411. The reversal of 22142390 is 9324122.

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, 17540 + ... + 18759.

It is an arithmetic number, because the mean of its divisors is an integer number (2531925).

Almost surely, 2^22142390 is an apocalyptic number.

22142390 is a deficient number, since it is larger than the sum of its proper divisors (18368410).

22142390 is a wasteful number, since it uses less digits than its factorization.

22142390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36367.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 22142390 is about 4705.5701036113. The cubic root of 22142390 is about 280.8071522895.

The spelling of 22142390 in words is "twenty-two million, one hundred forty-two thousand, three hundred ninety".