22678442 has 8 divisors (see below), whose sum is σ = 36018756. Its totient is φ = 10672192.

The previous prime is 22678441. The next prime is 22678463. The reversal of 22678442 is 24487622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21353641 + 1324801 = 4621^2 + 1151^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22678441) 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, 333473 + ... + 333540.

Almost surely, 2^22678442 is an apocalyptic number.

22678442 is a deficient number, since it is larger than the sum of its proper divisors (13340314).

22678442 is a wasteful number, since it uses less digits than its factorization.

22678442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667032.

The product of its digits is 43008, while the sum is 35.

The square root of 22678442 is about 4762.1887824823. The cubic root of 22678442 is about 283.0551570416.

The spelling of 22678442 in words is "twenty-two million, six hundred seventy-eight thousand, four hundred forty-two".