1315550720 has 240 divisors, whose sum is σ = 3605019264. Its totient is φ = 459571200.

The previous prime is 1315550713. The next prime is 1315550759. The reversal of 1315550720 is 270555131.

It is a happy number.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 9602492 + ... + 9602628.

Almost surely, 2^1315550720 is an apocalyptic number.

1315550720 is a gapful number since it is divisible by the number (10) 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 1315550720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1802509632).

1315550720 is an abundant number, since it is smaller than the sum of its proper divisors (2289468544).

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

1315550720 is a wasteful number, since it uses less digits than its factorization.

1315550720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 1315550720 is about 36270.5213637742. The cubic root of 1315550720 is about 1095.7274261341.

The spelling of 1315550720 in words is "one billion, three hundred fifteen million, five hundred fifty thousand, seven hundred twenty".