22157705 has 8 divisors (see below), whose sum is σ = 27988800. Its totient is φ = 16793136.

The previous prime is 22157689. The next prime is 22157713. The reversal of 22157705 is 50775122.

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

It is a cyclic number.

It is not a de Polignac number, because 22157705 - 2⁴ = 22157689 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, 116525 + ... + 116714.

It is an arithmetic number, because the mean of its divisors is an integer number (3498600).

Almost surely, 2^22157705 is an apocalyptic number.

It is an amenable number.

22157705 is a deficient number, since it is larger than the sum of its proper divisors (5831095).

22157705 is a wasteful number, since it uses less digits than its factorization.

22157705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233263.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 22157705 is about 4707.1971490474. The cubic root of 22157705 is about 280.8718783709.

The spelling of 22157705 in words is "twenty-two million, one hundred fifty-seven thousand, seven hundred five".