22378242 has 16 divisors (see below), whose sum is σ = 45017280. Its totient is φ = 7415952.

The previous prime is 22378231. The next prime is 22378247. The reversal of 22378242 is 24287322.

It is not an unprimeable number, because it can be changed into a prime (22378247) 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, 9742 + ... + 11817.

It is an arithmetic number, because the mean of its divisors is an integer number (2813580).

Almost surely, 2^22378242 is an apocalyptic number.

22378242 is an abundant number, since it is smaller than the sum of its proper divisors (22639038).

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

22378242 is a wasteful number, since it uses less digits than its factorization.

22378242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737.

The product of its digits is 10752, while the sum is 30.

The square root of 22378242 is about 4730.5646597420. The cubic root of 22378242 is about 281.8006488067.

The spelling of 22378242 in words is "twenty-two million, three hundred seventy-eight thousand, two hundred forty-two".