2828878931 has 8 divisors (see below), whose sum is σ = 2999882304. Its totient is φ = 2658386560.

The previous prime is 2828878879. The next prime is 2828879021. The reversal of 2828878931 is 1398788282.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2828878931 is a prime.

It is a super-2 number, since 2×2828878931² = 16005112012511405522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2828878831) 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, 116315 + ... + 138516.

It is an arithmetic number, because the mean of its divisors is an integer number (374985288).

Almost surely, 2^2828878931 is an apocalyptic number.

2828878931 is a deficient number, since it is larger than the sum of its proper divisors (171003373).

2828878931 is a wasteful number, since it uses less digits than its factorization.

2828878931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255501.

The product of its digits is 3096576, while the sum is 56.

The square root of 2828878931 is about 53187.2064598245. The cubic root of 2828878931 is about 1414.2888594063.

The spelling of 2828878931 in words is "two billion, eight hundred twenty-eight million, eight hundred seventy-eight thousand, nine hundred thirty-one".