22478365 has 32 divisors (see below), whose sum is σ = 33546240. Its totient is φ = 14079744.

The previous prime is 22478363. The next prime is 22478371. The reversal of 22478365 is 56387422.

It is not a de Polignac number, because 22478365 - 2¹ = 22478363 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22478363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57591 + ... + 57979.

It is an arithmetic number, because the mean of its divisors is an integer number (1048320).

Almost surely, 2^22478365 is an apocalyptic number.

It is an amenable number.

22478365 is a deficient number, since it is larger than the sum of its proper divisors (11067875).

22478365 is a wasteful number, since it uses less digits than its factorization.

22478365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its digits is 80640, while the sum is 37.

The square root of 22478365 is about 4741.1354125357. The cubic root of 22478365 is about 282.2202938043.

The spelling of 22478365 in words is "twenty-two million, four hundred seventy-eight thousand, three hundred sixty-five".