78981424 has 10 divisors (see below), whose sum is σ = 153026540. Its totient is φ = 39490704.

The previous prime is 78981407. The next prime is 78981433. The reversal of 78981424 is 42418987.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2468154 + ... + 2468185.

It is an arithmetic number, because the mean of its divisors is an integer number (15302654).

Almost surely, 2^78981424 is an apocalyptic number.

It is an amenable number.

78981424 is a deficient number, since it is larger than the sum of its proper divisors (74045116).

78981424 is a wasteful number, since it uses less digits than its factorization.

78981424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4936347 (or 4936341 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 78981424 is about 8887.1493742369. The cubic root of 78981424 is about 429.0504085676.

The spelling of 78981424 in words is "seventy-eight million, nine hundred eighty-one thousand, four hundred twenty-four".