78884424 has 48 divisors (see below), whose sum is σ = 218200320. Its totient is φ = 25734240.

The previous prime is 78884419. The next prime is 78884441. The reversal of 78884424 is 42448887.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78884424.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8272 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (4545840).

Almost surely, 2^78884424 is an apocalyptic number.

It is an amenable number.

78884424 is an abundant number, since it is smaller than the sum of its proper divisors (139315896).

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

78884424 is a wasteful number, since it uses less digits than its factorization.

78884424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23370 (or 23363 counting only the distinct ones).

The product of its digits is 458752, while the sum is 45.

The square root of 78884424 is about 8881.6903796518. The cubic root of 78884424 is about 428.8746924028.

The spelling of 78884424 in words is "seventy-eight million, eight hundred eighty-four thousand, four hundred twenty-four".