22478679 has 6 divisors (see below), whose sum is σ = 32469216. Its totient is φ = 14985780.

The previous prime is 22478669. The next prime is 22478681. The reversal of 22478679 is 97687422.

It is not a de Polignac number, because 22478679 - 2⁹ = 22478167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22478609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1248807 + ... + 1248824.

It is an arithmetic number, because the mean of its divisors is an integer number (5411536).

Almost surely, 2^22478679 is an apocalyptic number.

22478679 is a deficient number, since it is larger than the sum of its proper divisors (9990537).

22478679 is a wasteful number, since it uses less digits than its factorization.

22478679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497637 (or 2497634 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 22478679 is about 4741.1685268507. The cubic root of 22478679 is about 282.2216079087.

The spelling of 22478679 in words is "twenty-two million, four hundred seventy-eight thousand, six hundred seventy-nine".