78976 has 16 divisors (see below), whose sum is σ = 157590. Its totient is φ = 39424.

The previous prime is 78941. The next prime is 78977. The reversal of 78976 is 67987.

It can be written as a sum of positive squares in only one way, i.e., 78400 + 576 = 280^2 + 24^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (78977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181 + ... + 436.

2⁷⁸⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

78976 is a deficient number, since it is larger than the sum of its proper divisors (78614).

78976 is an equidigital number, since it uses as much as digits as its factorization.

78976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 619 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 78976 is about 281.0266891240. The cubic root of 78976 is about 42.9040586753.

The spelling of 78976 in words is "seventy-eight thousand, nine hundred seventy-six".