318289420 has 24 divisors (see below), whose sum is σ = 676872000. Its totient is φ = 125703552.

The previous prime is 318289409. The next prime is 318289421. The reversal of 318289420 is 24982813.

It is a self number, because there is not a number n which added to its sum of digits gives 318289420.

It is not an unprimeable number, because it can be changed into a prime (318289421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99145 + ... + 102304.

It is an arithmetic number, because the mean of its divisors is an integer number (28203000).

Almost surely, 2^318289420 is an apocalyptic number.

It is an amenable number.

318289420 is an abundant number, since it is smaller than the sum of its proper divisors (358582580).

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

318289420 is a wasteful number, since it uses less digits than its factorization.

318289420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201537 (or 201535 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 318289420 is about 17840.6675884060. The cubic root of 318289420 is about 682.7694294197.

The spelling of 318289420 in words is "three hundred eighteen million, two hundred eighty-nine thousand, four hundred twenty".