83178828 has 72 divisors (see below), whose sum is σ = 220228736. Its totient is φ = 26438400.

The previous prime is 83178779. The next prime is 83178839. The reversal of 83178828 is 82887138.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80958 + ... + 81978.

Almost surely, 2^83178828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83178828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110114368).

83178828 is an abundant number, since it is smaller than the sum of its proper divisors (137049908).

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

83178828 is a wasteful number, since it uses less digits than its factorization.

83178828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1130 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 83178828 is about 9120.2427599270. The cubic root of 83178828 is about 436.5201196821.

The spelling of 83178828 in words is "eighty-three million, one hundred seventy-eight thousand, eight hundred twenty-eight".