83878878 has 8 divisors (see below), whose sum is σ = 167757768. Its totient is φ = 27959624.

The previous prime is 83878859. The next prime is 83878891. The reversal of 83878878 is 87887838.

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

83878878 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6989901 + ... + 6989912.

It is an arithmetic number, because the mean of its divisors is an integer number (20969721).

Almost surely, 2^83878878 is an apocalyptic number.

83878878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83878878 is a wasteful number, since it uses less digits than its factorization.

83878878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13979818.

The product of its digits is 4816896, while the sum is 57.

The square root of 83878878 is about 9158.5412593928. The cubic root of 83878878 is about 437.7413142739.

The spelling of 83878878 in words is "eighty-three million, eight hundred seventy-eight thousand, eight hundred seventy-eight".