78300680 has 16 divisors (see below), whose sum is σ = 176176620. Its totient is φ = 31320256.

The previous prime is 78300647. The next prime is 78300697. The reversal of 78300680 is 8600387.

It can be written as a sum of positive squares in 2 ways, for example, as 78180964 + 119716 = 8842^2 + 346^2 .

It is a super-2 number, since 2×78300680² = 12261992976924800, 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, 978719 + ... + 978798.

Almost surely, 2^78300680 is an apocalyptic number.

It is an amenable number.

78300680 is an abundant number, since it is smaller than the sum of its proper divisors (97875940).

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

78300680 is a wasteful number, since it uses less digits than its factorization.

78300680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957528 (or 1957524 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 78300680 is about 8848.7671457667. The cubic root of 78300680 is about 427.8141825930.

The spelling of 78300680 in words is "seventy-eight million, three hundred thousand, six hundred eighty".