78730460 has 12 divisors (see below), whose sum is σ = 165334008. Its totient is φ = 31492176.

The previous prime is 78730441. The next prime is 78730469. The reversal of 78730460 is 6403787.

It is a self number, because there is not a number n which added to its sum of digits gives 78730460.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78730469) 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 3 ways as a sum of consecutive naturals, for example, 1968242 + ... + 1968281.

It is an arithmetic number, because the mean of its divisors is an integer number (13777834).

Almost surely, 2^78730460 is an apocalyptic number.

It is an amenable number.

78730460 is an abundant number, since it is smaller than the sum of its proper divisors (86603548).

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

78730460 is a wasteful number, since it uses less digits than its factorization.

78730460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936532 (or 3936530 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 78730460 is about 8873.0186520710. The cubic root of 78730460 is about 428.5954895486.

The spelling of 78730460 in words is "seventy-eight million, seven hundred thirty thousand, four hundred sixty".