1317428652 has 12 divisors (see below), whose sum is σ = 3074000216. Its totient is φ = 439142880.

The previous prime is 1317428639. The next prime is 1317428663. The reversal of 1317428652 is 2568247131.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1317428652² = 3471236506221074208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1317428652.

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, 54892849 + ... + 54892872.

Almost surely, 2^1317428652 is an apocalyptic number.

1317428652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1317428652 is an abundant number, since it is smaller than the sum of its proper divisors (1756571564).

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

1317428652 is a wasteful number, since it uses less digits than its factorization.

1317428652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109785728 (or 109785726 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 1317428652 is about 36296.3999867755. The cubic root of 1317428652 is about 1096.2485572536.

The spelling of 1317428652 in words is "one billion, three hundred seventeen million, four hundred twenty-eight thousand, six hundred fifty-two".