2015305240 has 64 divisors (see below), whose sum is σ = 4897519200. Its totient is φ = 741937152.

The previous prime is 2015305219. The next prime is 2015305277. The reversal of 2015305240 is 425035102.

It is a super-2 number, since 2×2015305240² = 8122910420742915200, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

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, 178071 + ... + 189049.

Almost surely, 2^2015305240 is an apocalyptic number.

2015305240 is a gapful number since it is divisible by the number (20) 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 2015305240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2448759600).

2015305240 is an abundant number, since it is smaller than the sum of its proper divisors (2882213960).

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

2015305240 is a wasteful number, since it uses less digits than its factorization.

2015305240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11356 (or 11352 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2015305240 is about 44892.1512070874. The cubic root of 2015305240 is about 1263.1267853315.

The spelling of 2015305240 in words is "two billion, fifteen million, three hundred five thousand, two hundred forty".