319686428 has 24 divisors (see below), whose sum is σ = 593000352. Its totient is φ = 150278144.

The previous prime is 319686403. The next prime is 319686449. The reversal of 319686428 is 824686913.

319686428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80825 + ... + 84687.

It is an arithmetic number, because the mean of its divisors is an integer number (24708348).

Almost surely, 2^319686428 is an apocalyptic number.

It is an amenable number.

319686428 is a deficient number, since it is larger than the sum of its proper divisors (273313924).

319686428 is a wasteful number, since it uses less digits than its factorization.

319686428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101 (or 5099 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 319686428 is about 17879.7770679614. Note that the first 3 decimals coincide. The cubic root of 319686428 is about 683.7668887473.

The spelling of 319686428 in words is "three hundred nineteen million, six hundred eighty-six thousand, four hundred twenty-eight".