2015303440 has 40 divisors (see below), whose sum is σ = 4688235648. Its totient is φ = 805664640.

The previous prime is 2015303363. The next prime is 2015303441. The reversal of 2015303440 is 443035102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2015303440² = 8122895910551667200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2015303441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158935 + ... + 171145.

Almost surely, 2^2015303440 is an apocalyptic number.

2015303440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015303440 is an abundant number, since it is smaller than the sum of its proper divisors (2672932208).

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

2015303440 is a wasteful number, since it uses less digits than its factorization.

2015303440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14287 (or 14281 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 2015303440 is about 44892.1311590350. The cubic root of 2015303440 is about 1263.1264092712.

Adding to 2015303440 its reverse (443035102), we get a palindrome (2458338542).

The spelling of 2015303440 in words is "two billion, fifteen million, three hundred three thousand, four hundred forty".