22478244 has 24 divisors (see below), whose sum is σ = 52718400. Its totient is φ = 7454304.

The previous prime is 22478243. The next prime is 22478249. The reversal of 22478244 is 44287422.

It is not an unprimeable number, because it can be changed into a prime (22478243) 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, 2319 + ... + 7094.

It is an arithmetic number, because the mean of its divisors is an integer number (2196600).

Almost surely, 2^22478244 is an apocalyptic number.

It is an amenable number.

22478244 is an abundant number, since it is smaller than the sum of its proper divisors (30240156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22478244 is a wasteful number, since it uses less digits than its factorization.

22478244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9619 (or 9617 counting only the distinct ones).

The product of its digits is 28672, while the sum is 33.

The square root of 22478244 is about 4741.1226518621. The cubic root of 22478244 is about 282.2197874104.

It can be divided in two parts, 22478 and 244, that added together give a palindrome (22722).

The spelling of 22478244 in words is "twenty-two million, four hundred seventy-eight thousand, two hundred forty-four".