22478359 has 4 divisors (see below), whose sum is σ = 22491000. Its totient is φ = 22465720.

The previous prime is 22478353. The next prime is 22478363. The reversal of 22478359 is 95387422.

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

It is a cyclic number.

It is not a de Polignac number, because 22478359 - 2⁵ = 22478327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22478353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3109 + ... + 7390.

It is an arithmetic number, because the mean of its divisors is an integer number (5622750).

Almost surely, 2^22478359 is an apocalyptic number.

22478359 is a deficient number, since it is larger than the sum of its proper divisors (12641).

22478359 is a wasteful number, since it uses less digits than its factorization.

22478359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12640.

The product of its digits is 120960, while the sum is 40.

The square root of 22478359 is about 4741.1347797758. The cubic root of 22478359 is about 282.2202686939.

The spelling of 22478359 in words is "twenty-two million, four hundred seventy-eight thousand, three hundred fifty-nine".