76830978 has 16 divisors (see below), whose sum is σ = 175613760. Its totient is φ = 21951696.

The previous prime is 76830961. The next prime is 76830983. The reversal of 76830978 is 87903867.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914613 + ... + 914696.

It is an arithmetic number, because the mean of its divisors is an integer number (10975860).

Almost surely, 2^76830978 is an apocalyptic number.

76830978 is an abundant number, since it is smaller than the sum of its proper divisors (98782782).

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

76830978 is a wasteful number, since it uses less digits than its factorization.

76830978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829321.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 76830978 is about 8765.3281741188. The cubic root of 76830978 is about 425.1205710968.

The spelling of 76830978 in words is "seventy-six million, eight hundred thirty thousand, nine hundred seventy-eight".