78445433 has 16 divisors (see below), whose sum is σ = 94003200. Its totient is φ = 64619280.

The previous prime is 78445403. The next prime is 78445441. The reversal of 78445433 is 33454487.

It is not a de Polignac number, because 78445433 - 2²⁰ = 77396857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78445403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3353 + ... + 12966.

It is an arithmetic number, because the mean of its divisors is an integer number (5875200).

Almost surely, 2^78445433 is an apocalyptic number.

It is an amenable number.

78445433 is a deficient number, since it is larger than the sum of its proper divisors (15557767).

78445433 is a wasteful number, since it uses less digits than its factorization.

78445433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16372.

The product of its digits is 161280, while the sum is 38.

The square root of 78445433 is about 8856.9426440505. The cubic root of 78445433 is about 428.0776509910.

It can be divided in two parts, 784454 and 33, that added together give a palindrome (784487).

The spelling of 78445433 in words is "seventy-eight million, four hundred forty-five thousand, four hundred thirty-three".