1315447056 has 480 divisors, whose sum is σ = 4902543360. Its totient is φ = 319334400.

The previous prime is 1315447037. The next prime is 1315447069. The reversal of 1315447056 is 6507445131.

1315447056 is a `hidden beast` number, since 131 + 5 + 4 + 470 + 56 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1315447056.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14780260 + ... + 14780348.

It is an arithmetic number, because the mean of its divisors is an integer number (10213632).

Almost surely, 2^1315447056 is an apocalyptic number.

1315447056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1315447056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451271680).

1315447056 is an abundant number, since it is smaller than the sum of its proper divisors (3587096304).

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

1315447056 is a wasteful number, since it uses less digits than its factorization.

1315447056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 1315447056 is about 36269.0922963341. The cubic root of 1315447056 is about 1095.6986446588.

The spelling of 1315447056 in words is "one billion, three hundred fifteen million, four hundred forty-seven thousand, fifty-six".