319643480 has 128 divisors (see below), whose sum is σ = 812851200. Its totient is φ = 112320000.

The previous prime is 319643473. The next prime is 319643483. The reversal of 319643480 is 84346913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319643483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1273355 + ... + 1273605.

It is an arithmetic number, because the mean of its divisors is an integer number (6350400).

Almost surely, 2^319643480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 319643480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406425600).

319643480 is an abundant number, since it is smaller than the sum of its proper divisors (493207720).

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

319643480 is a wasteful number, since it uses less digits than its factorization.

319643480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 319643480 is about 17878.5760059351. The cubic root of 319643480 is about 683.7362673498.

The spelling of 319643480 in words is "three hundred nineteen million, six hundred forty-three thousand, four hundred eighty".