22878380 has 24 divisors (see below), whose sum is σ = 54908448. Its totient is φ = 7843968.

The previous prime is 22878377. The next prime is 22878407. The reversal of 22878380 is 8387822.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81569 + ... + 81848.

It is an arithmetic number, because the mean of its divisors is an integer number (2287852).

Almost surely, 2^22878380 is an apocalyptic number.

22878380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22878380 is an abundant number, since it is smaller than the sum of its proper divisors (32030068).

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

22878380 is a wasteful number, since it uses less digits than its factorization.

22878380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163433 (or 163431 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 22878380 is about 4783.1349552359. The cubic root of 22878380 is about 283.8845493841.

The spelling of 22878380 in words is "twenty-two million, eight hundred seventy-eight thousand, three hundred eighty".