216130878 has 24 divisors (see below), whose sum is σ = 475275528. Its totient is φ = 70967952.

The previous prime is 216130861. The next prime is 216130891. The reversal of 216130878 is 878031612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88401 + ... + 90812.

It is an arithmetic number, because the mean of its divisors is an integer number (19803147).

Almost surely, 2^216130878 is an apocalyptic number.

216130878 is an abundant number, since it is smaller than the sum of its proper divisors (259144650).

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

216130878 is a wasteful number, since it uses less digits than its factorization.

216130878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179288 (or 179285 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 216130878 is about 14701.3903424132. The cubic root of 216130878 is about 600.1211588659.

The spelling of 216130878 in words is "two hundred sixteen million, one hundred thirty thousand, eight hundred seventy-eight".