22157386 has 4 divisors (see below), whose sum is σ = 33236082. Its totient is φ = 11078692.

The previous prime is 22157327. The next prime is 22157389. The reversal of 22157386 is 68375122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18619225 + 3538161 = 4315^2 + 1881^2 .

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 as a sum of consecutive naturals, namely, 5539345 + ... + 5539348.

Almost surely, 2^22157386 is an apocalyptic number.

22157386 is a deficient number, since it is larger than the sum of its proper divisors (11078696).

22157386 is a wasteful number, since it uses less digits than its factorization.

22157386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11078695.

The product of its digits is 20160, while the sum is 34.

The square root of 22157386 is about 4707.1632646425. The cubic root of 22157386 is about 280.8705304792.

The spelling of 22157386 in words is "twenty-two million, one hundred fifty-seven thousand, three hundred eighty-six".