22157443 has 16 divisors (see below), whose sum is σ = 29251584. Its totient is φ = 16248960.

The previous prime is 22157417. The next prime is 22157459. The reversal of 22157443 is 34475122.

It is not a de Polignac number, because 22157443 - 2¹³ = 22149251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22157483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7155 + ... + 9772.

It is an arithmetic number, because the mean of its divisors is an integer number (1828224).

Almost surely, 2^22157443 is an apocalyptic number.

22157443 is a deficient number, since it is larger than the sum of its proper divisors (7094141).

22157443 is a wasteful number, since it uses less digits than its factorization.

22157443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16962.

The product of its digits is 6720, while the sum is 28.

The square root of 22157443 is about 4707.1693192406. The cubic root of 22157443 is about 280.8707713260.

The spelling of 22157443 in words is "twenty-two million, one hundred fifty-seven thousand, four hundred forty-three".