78433424 has 30 divisors (see below), whose sum is σ = 153842274. Its totient is φ = 38737920.

The previous prime is 78433417. The next prime is 78433447. The reversal of 78433424 is 42433487.

It can be written as a sum of positive squares in 3 ways, for example, as 4129024 + 74304400 = 2032^2 + 8620^2 .

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 in 5 ways as a sum of consecutive naturals, for example, 150284 + ... + 150804.

Almost surely, 2^78433424 is an apocalyptic number.

It is an amenable number.

78433424 is a deficient number, since it is larger than the sum of its proper divisors (75408850).

78433424 is an equidigital number, since it uses as much as digits as its factorization.

78433424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 620 counting only the distinct ones).

The product of its digits is 64512, while the sum is 35.

The square root of 78433424 is about 8856.2646753583. The cubic root of 78433424 is about 428.0558054581.

The spelling of 78433424 in words is "seventy-eight million, four hundred thirty-three thousand, four hundred twenty-four".