22889378 has 18 divisors (see below), whose sum is σ = 36656721. Its totient is φ = 10717344.

The previous prime is 22889371. The next prime is 22889387. The reversal of 22889378 is 87398822.

It can be written as a sum of positive squares in 2 ways, for example, as 20948929 + 1940449 = 4577^2 + 1393^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3383.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22889371) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 114923 + ... + 115121.

Almost surely, 2^22889378 is an apocalyptic number.

22889378 is a deficient number, since it is larger than the sum of its proper divisors (13767343).

22889378 is an equidigital number, since it uses as much as digits as its factorization.

22889378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 218 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 22889378 is about 4784.2844815082. The cubic root of 22889378 is about 283.9300313648.

The spelling of 22889378 in words is "twenty-two million, eight hundred eighty-nine thousand, three hundred seventy-eight".