18879078 has 16 divisors (see below), whose sum is σ = 39979440. Its totient is φ = 5922816.

The previous prime is 18879071. The next prime is 18879083. The reversal of 18879078 is 87097881.

It is a super-2 number, since 2×18879078² = 712839172260168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18879071) 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, 92443 + ... + 92646.

It is an arithmetic number, because the mean of its divisors is an integer number (2498715).

Almost surely, 2^18879078 is an apocalyptic number.

18879078 is an abundant number, since it is smaller than the sum of its proper divisors (21100362).

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

18879078 is a wasteful number, since it uses less digits than its factorization.

18879078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185111.

The product of its (nonzero) digits is 225792, while the sum is 48.

The square root of 18879078 is about 4345.0060989600. The cubic root of 18879078 is about 266.2728746685.

The spelling of 18879078 in words is "eighteen million, eight hundred seventy-nine thousand, seventy-eight".