22878915 has 8 divisors (see below), whose sum is σ = 36606288. Its totient is φ = 12202080.

The previous prime is 22878893. The next prime is 22878917. The reversal of 22878915 is 51987822.

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

It is not a de Polignac number, because 22878915 - 2⁶ = 22878851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22878917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762616 + ... + 762645.

It is an arithmetic number, because the mean of its divisors is an integer number (4575786).

Almost surely, 2^22878915 is an apocalyptic number.

22878915 is a deficient number, since it is larger than the sum of its proper divisors (13727373).

22878915 is a wasteful number, since it uses less digits than its factorization.

22878915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525269.

The product of its digits is 80640, while the sum is 42.

The square root of 22878915 is about 4783.1908805733. The cubic root of 22878915 is about 283.8867622017.

The spelling of 22878915 in words is "twenty-two million, eight hundred seventy-eight thousand, nine hundred fifteen".