78523484 has 18 divisors (see below), whose sum is σ = 148800960. Its totient is φ = 36241296.

The previous prime is 78523481. The next prime is 78523499. The reversal of 78523484 is 48432587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78523481) 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 5 ways as a sum of consecutive naturals, for example, 57404 + ... + 58755.

It is an arithmetic number, because the mean of its divisors is an integer number (8266720).

Almost surely, 2^78523484 is an apocalyptic number.

It is an amenable number.

78523484 is a deficient number, since it is larger than the sum of its proper divisors (70277476).

78523484 is a wasteful number, since it uses less digits than its factorization.

78523484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116189 (or 116174 counting only the distinct ones).

The product of its digits is 215040, while the sum is 41.

The square root of 78523484 is about 8861.3477530227. The cubic root of 78523484 is about 428.2195790051.

The spelling of 78523484 in words is "seventy-eight million, five hundred twenty-three thousand, four hundred eighty-four".