22173745 has 8 divisors (see below), whose sum is σ = 29027520. Its totient is φ = 16126320.

The previous prime is 22173721. The next prime is 22173757. The reversal of 22173745 is 54737122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22173745 - 2⁷ = 22173617 is a prime.

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, 201525 + ... + 201634.

It is an arithmetic number, because the mean of its divisors is an integer number (3628440).

Almost surely, 2^22173745 is an apocalyptic number.

It is an amenable number.

22173745 is a deficient number, since it is larger than the sum of its proper divisors (6853775).

22173745 is a wasteful number, since it uses less digits than its factorization.

22173745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403175.

The product of its digits is 11760, while the sum is 31.

The square root of 22173745 is about 4708.9006147932. The cubic root of 22173745 is about 280.9396365655.

The spelling of 22173745 in words is "twenty-two million, one hundred seventy-three thousand, seven hundred forty-five".