1520317472 has 24 divisors (see below), whose sum is σ = 3023988156. Its totient is φ = 752320512.

The previous prime is 1520317453. The next prime is 1520317483. The reversal of 1520317472 is 2747130251.

It can be written as a sum of positive squares in 2 ways, for example, as 1508234896 + 12082576 = 38836^2 + 3476^2 .

It is a super-2 number, since 2×1520317472² = 4622730431336941568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241793 + ... + 248000.

Almost surely, 2^1520317472 is an apocalyptic number.

It is an amenable number.

1520317472 is a deficient number, since it is larger than the sum of its proper divisors (1503670684).

1520317472 is an equidigital number, since it uses as much as digits as its factorization.

1520317472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489900 (or 489892 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 1520317472 is about 38991.2486591543. The cubic root of 1520317472 is about 1149.8594590697.

The spelling of 1520317472 in words is "one billion, five hundred twenty million, three hundred seventeen thousand, four hundred seventy-two".