22279994 has 32 divisors (see below), whose sum is σ = 37953792. Its totient is φ = 9720000.

The previous prime is 22279987. The next prime is 22280017. The reversal of 22279994 is 49997222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82079 + ... + 82349.

It is an arithmetic number, because the mean of its divisors is an integer number (1186056).

Almost surely, 2^22279994 is an apocalyptic number.

22279994 is a deficient number, since it is larger than the sum of its proper divisors (15673798).

22279994 is a wasteful number, since it uses less digits than its factorization.

22279994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422.

The product of its digits is 163296, while the sum is 44.

The square root of 22279994 is about 4720.1688529119. The cubic root of 22279994 is about 281.3876439675.

It can be divided in two parts, 2227 and 9994, that added together give a palindrome (12221).

The spelling of 22279994 in words is "twenty-two million, two hundred seventy-nine thousand, nine hundred ninety-four".