78430684 has 24 divisors (see below), whose sum is σ = 139518288. Its totient is φ = 38572800.

The previous prime is 78430657. The next prime is 78430687. The reversal of 78430684 is 48603487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78430687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111534 + ... + 112234.

It is an arithmetic number, because the mean of its divisors is an integer number (5813262).

Almost surely, 2^78430684 is an apocalyptic number.

It is an amenable number.

78430684 is a deficient number, since it is larger than the sum of its proper divisors (61087604).

78430684 is a wasteful number, since it uses less digits than its factorization.

78430684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1125 (or 1123 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 78430684 is about 8856.1099812502. The cubic root of 78430684 is about 428.0508208206.

The spelling of 78430684 in words is "seventy-eight million, four hundred thirty thousand, six hundred eighty-four".