318089772 has 324 divisors, whose sum is σ = 1116283896. Its totient is φ = 75479040.

The previous prime is 318089741. The next prime is 318089833. The reversal of 318089772 is 277980813.

It is a super-2 number, since 2×318089772² = 202362206102023968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3279228 + ... + 3279324.

Almost surely, 2^318089772 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 318089772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558141948).

318089772 is an abundant number, since it is smaller than the sum of its proper divisors (798194124).

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

318089772 is a wasteful number, since it uses less digits than its factorization.

318089772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 318089772 is about 17835.0714043987. The cubic root of 318089772 is about 682.6266431656.

The spelling of 318089772 in words is "three hundred eighteen million, eighty-nine thousand, seven hundred seventy-two".