78971076 has 18 divisors (see below), whose sum is σ = 199621422. Its totient is φ = 26323680.

The previous prime is 78971063. The next prime is 78971107. The reversal of 78971076 is 67017987.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 72590400 + 6380676 = 8520^2 + 2526^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1096785 + ... + 1096856.

It is an arithmetic number, because the mean of its divisors is an integer number (11090079).

Almost surely, 2^78971076 is an apocalyptic number.

It is an amenable number.

78971076 is an abundant number, since it is smaller than the sum of its proper divisors (120650346).

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

78971076 is a wasteful number, since it uses less digits than its factorization.

78971076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193651 (or 2193646 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The square root of 78971076 is about 8886.5671662347. The cubic root of 78971076 is about 429.0316699524.

The spelling of 78971076 in words is "seventy-eight million, nine hundred seventy-one thousand, seventy-six".