2015315240 has 16 divisors (see below), whose sum is σ = 4534459380. Its totient is φ = 806126080.

The previous prime is 2015315213. The next prime is 2015315249. The reversal of 2015315240 is 425135102.

It can be written as a sum of positive squares in 2 ways, for example, as 1952049124 + 63266116 = 44182^2 + 7954^2 .

It is a super-2 number, since 2×2015315240² = 8122991033152515200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2015315249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25191401 + ... + 25191480.

Almost surely, 2^2015315240 is an apocalyptic number.

2015315240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015315240 is an abundant number, since it is smaller than the sum of its proper divisors (2519144140).

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

2015315240 is a wasteful number, since it uses less digits than its factorization.

2015315240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50382892 (or 50382888 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2015315240 is about 44892.2625849934. The cubic root of 2015315240 is about 1263.1288745514.

The spelling of 2015315240 in words is "two billion, fifteen million, three hundred fifteen thousand, two hundred forty".