78830824 has 16 divisors (see below), whose sum is σ = 147914820. Its totient is φ = 39386880.

The previous prime is 78830783. The next prime is 78830879. The reversal of 78830824 is 42803887.

It can be written as a sum of positive squares in 2 ways, for example, as 76212900 + 2617924 = 8730^2 + 1618^2 .

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, 12354 + ... + 17614.

Almost surely, 2^78830824 is an apocalyptic number.

It is an amenable number.

78830824 is a deficient number, since it is larger than the sum of its proper divisors (69083996).

78830824 is a wasteful number, since it uses less digits than its factorization.

78830824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140 (or 7136 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 78830824 is about 8878.6724232849. The cubic root of 78830824 is about 428.7775338391. Note that the first 3 decimals are identical.

The spelling of 78830824 in words is "seventy-eight million, eight hundred thirty thousand, eight hundred twenty-four".