22157385 has 8 divisors (see below), whose sum is σ = 35451840. Its totient is φ = 11817264.

The previous prime is 22157327. The next prime is 22157389. The reversal of 22157385 is 58375122.

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

It is not a de Polignac number, because 22157385 - 2⁸ = 22157129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22157389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738565 + ... + 738594.

It is an arithmetic number, because the mean of its divisors is an integer number (4431480).

Almost surely, 2^22157385 is an apocalyptic number.

It is an amenable number.

22157385 is a deficient number, since it is larger than the sum of its proper divisors (13294455).

22157385 is a wasteful number, since it uses less digits than its factorization.

22157385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477167.

The product of its digits is 16800, while the sum is 33.

The square root of 22157385 is about 4707.1631584214. The cubic root of 22157385 is about 280.8705262538.

The spelling of 22157385 in words is "twenty-two million, one hundred fifty-seven thousand, three hundred eighty-five".