320078734 has 8 divisors (see below), whose sum is σ = 480244608. Its totient is φ = 159997200.

The previous prime is 320078729. The next prime is 320078743. The reversal of 320078734 is 437870023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 320078734.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 10542 + ... + 27409.

It is an arithmetic number, because the mean of its divisors is an integer number (60030576).

Almost surely, 2^320078734 is an apocalyptic number.

320078734 is a deficient number, since it is larger than the sum of its proper divisors (160165874).

320078734 is a wasteful number, since it uses less digits than its factorization.

320078734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42170.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 320078734 is about 17890.7443668507. The cubic root of 320078734 is about 684.0464712564.

The spelling of 320078734 in words is "three hundred twenty million, seventy-eight thousand, seven hundred thirty-four".