22378472 has 8 divisors (see below), whose sum is σ = 41959650. Its totient is φ = 11189232.

The previous prime is 22378441. The next prime is 22378481. The reversal of 22378472 is 27487322.

It can be written as a sum of positive squares in only one way, i.e., 17023876 + 5354596 = 4126^2 + 2314^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1398647 + ... + 1398662.

Almost surely, 2^22378472 is an apocalyptic number.

It is an amenable number.

22378472 is a deficient number, since it is larger than the sum of its proper divisors (19581178).

22378472 is a wasteful number, since it uses less digits than its factorization.

22378472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797315 (or 2797311 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 22378472 is about 4730.5889696739. The cubic root of 22378472 is about 281.8016142375.

The spelling of 22378472 in words is "twenty-two million, three hundred seventy-eight thousand, four hundred seventy-two".