78851976 has 96 divisors (see below), whose sum is σ = 241452000. Its totient is φ = 21337344.

The previous prime is 78851951. The next prime is 78851977. The reversal of 78851976 is 67915887.

It is not an unprimeable number, because it can be changed into a prime (78851977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20580 + ... + 24108.

It is an arithmetic number, because the mean of its divisors is an integer number (2515125).

Almost surely, 2^78851976 is an apocalyptic number.

78851976 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78851976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120726000).

78851976 is an abundant number, since it is smaller than the sum of its proper divisors (162600024).

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

78851976 is a wasteful number, since it uses less digits than its factorization.

78851976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571 (or 3560 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The square root of 78851976 is about 8879.8635124646. The cubic root of 78851976 is about 428.8158804776.

The spelling of 78851976 in words is "seventy-eight million, eight hundred fifty-one thousand, nine hundred seventy-six".