78578484 has 12 divisors (see below), whose sum is σ = 183349824. Its totient is φ = 26192824.

The previous prime is 78578483. The next prime is 78578527. The reversal of 78578484 is 48487587.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78578483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3274092 + ... + 3274115.

It is an arithmetic number, because the mean of its divisors is an integer number (15279152).

Almost surely, 2^78578484 is an apocalyptic number.

It is an amenable number.

78578484 is an abundant number, since it is smaller than the sum of its proper divisors (104771340).

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

78578484 is a wasteful number, since it uses less digits than its factorization.

78578484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6548214 (or 6548212 counting only the distinct ones).

The product of its digits is 2007040, while the sum is 51.

The square root of 78578484 is about 8864.4505751908. The cubic root of 78578484 is about 428.3195345808.

The spelling of 78578484 in words is "seventy-eight million, five hundred seventy-eight thousand, four hundred eighty-four".