319134728 has 16 divisors (see below), whose sum is σ = 652775760. Its totient is φ = 145061200.

The previous prime is 319134679. The next prime is 319134793. The reversal of 319134728 is 827431913.

It is a junction number, because it is equal to n+sod(n) for n = 319134691 and 319134700.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1813178 + ... + 1813353.

It is an arithmetic number, because the mean of its divisors is an integer number (40798485).

Almost surely, 2^319134728 is an apocalyptic number.

It is an amenable number.

319134728 is an abundant number, since it is smaller than the sum of its proper divisors (333641032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319134728 is a wasteful number, since it uses less digits than its factorization.

319134728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626548 (or 3626544 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 319134728 is about 17864.3423612514. The cubic root of 319134728 is about 683.3733245417.

The spelling of 319134728 in words is "three hundred nineteen million, one hundred thirty-four thousand, seven hundred twenty-eight".