1312652420 has 48 divisors (see below), whose sum is σ = 2803465728. Its totient is φ = 516176640.

The previous prime is 1312652401. The next prime is 1312652479. The reversal of 1312652420 is 242562131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312652420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505325 + ... + 507915.

It is an arithmetic number, because the mean of its divisors is an integer number (58405536).

Almost surely, 2^1312652420 is an apocalyptic number.

1312652420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312652420 is an abundant number, since it is smaller than the sum of its proper divisors (1490813308).

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

1312652420 is a wasteful number, since it uses less digits than its factorization.

1312652420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1312652420 is about 36230.5454002558. The cubic root of 1312652420 is about 1094.9221659541.

The spelling of 1312652420 in words is "one billion, three hundred twelve million, six hundred fifty-two thousand, four hundred twenty".