78210976 has 24 divisors (see below), whose sum is σ = 156280320. Its totient is φ = 38520768.

The previous prime is 78210953. The next prime is 78211019. The reversal of 78210976 is 67901287.

It is a super-2 number, since 2×78210976² = 12233913533745152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16096 + ... + 20383.

It is an arithmetic number, because the mean of its divisors is an integer number (6511680).

Almost surely, 2^78210976 is an apocalyptic number.

It is an amenable number.

78210976 is a deficient number, since it is larger than the sum of its proper divisors (78069344).

78210976 is a wasteful number, since it uses less digits than its factorization.

78210976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36556 (or 36548 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 78210976 is about 8843.6969645053. The cubic root of 78210976 is about 427.6507471967.

The spelling of 78210976 in words is "seventy-eight million, two hundred ten thousand, nine hundred seventy-six".