83178768 has 20 divisors (see below), whose sum is σ = 214878608. Its totient is φ = 27726240.

The previous prime is 83178763. The next prime is 83178779. The reversal of 83178768 is 86787138.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1732891 = 83178768 / (8 + 3 + 1 + 7 + 8 + 7 + 6 + 8).

It is not an unprimeable number, because it can be changed into a prime (83178763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 866398 + ... + 866493.

Almost surely, 2^83178768 is an apocalyptic number.

It is an amenable number.

83178768 is an abundant number, since it is smaller than the sum of its proper divisors (131699840).

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

83178768 is a wasteful number, since it uses less digits than its factorization.

83178768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732902 (or 1732896 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 83178768 is about 9120.2394705402. The cubic root of 83178768 is about 436.5200147227.

The spelling of 83178768 in words is "eighty-three million, one hundred seventy-eight thousand, seven hundred sixty-eight".