22173240 has 32 divisors (see below), whose sum is σ = 66520080. Its totient is φ = 5912832.

The previous prime is 22173227. The next prime is 22173259. The reversal of 22173240 is 4237122.

It is a congruent number.

It is an unprimeable number.

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, 92269 + ... + 92508.

Almost surely, 2^22173240 is an apocalyptic number.

22173240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22173240 is an abundant number, since it is smaller than the sum of its proper divisors (44346840).

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

22173240 is a wasteful number, since it uses less digits than its factorization.

22173240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184791 (or 184787 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22173240 is about 4708.8469926299. The cubic root of 22173240 is about 280.9375037790.

The spelling of 22173240 in words is "twenty-two million, one hundred seventy-three thousand, two hundred forty".