78645344 has 12 divisors (see below), whose sum is σ = 154833084. Its totient is φ = 39322656.

The previous prime is 78645331. The next prime is 78645373. The reversal of 78645344 is 44354687.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1228802 + ... + 1228865.

It is an arithmetic number, because the mean of its divisors is an integer number (12902757).

Almost surely, 2^78645344 is an apocalyptic number.

It is an amenable number.

78645344 is a deficient number, since it is larger than the sum of its proper divisors (76187740).

78645344 is a wasteful number, since it uses less digits than its factorization.

78645344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457677 (or 2457669 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 78645344 is about 8868.2210166414. The cubic root of 78645344 is about 428.4409814207.

The spelling of 78645344 in words is "seventy-eight million, six hundred forty-five thousand, three hundred forty-four".