1317428064 has 120 divisors (see below), whose sum is σ = 3910903920. Its totient is φ = 435020544.

The previous prime is 1317428029. The next prime is 1317428081. The reversal of 1317428064 is 4608247131.

1317428064 is a `hidden beast` number, since 1 + 317 + 4 + 280 + 64 = 666.

It is a super-3 number, since 3×1317428064³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 280197 + ... + 284859.

It is an arithmetic number, because the mean of its divisors is an integer number (32590866).

Almost surely, 2^1317428064 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 1317428064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1955451960).

1317428064 is an abundant number, since it is smaller than the sum of its proper divisors (2593475856).

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

1317428064 is a wasteful number, since it uses less digits than its factorization.

1317428064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4777 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1317428064 is about 36296.3918867978. The cubic root of 1317428064 is about 1096.2483941595.

The spelling of 1317428064 in words is "one billion, three hundred seventeen million, four hundred twenty-eight thousand, sixty-four".