2015344240 has 80 divisors (see below), whose sum is σ = 5767005888. Its totient is φ = 637820928.

The previous prime is 2015344229. The next prime is 2015344267. The reversal of 2015344240 is 424435102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2015344240² = 8123224811402355200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131137 + ... + 145696.

Almost surely, 2^2015344240 is an apocalyptic number.

2015344240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2015344240 is an abundant number, since it is smaller than the sum of its proper divisors (3751661648).

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

2015344240 is a wasteful number, since it uses less digits than its factorization.

2015344240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276866 (or 276860 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2015344240 is about 44892.5855793582. The cubic root of 2015344240 is about 1263.1349332498.

Adding to 2015344240 its reverse (424435102), we get a palindrome (2439779342).

The spelling of 2015344240 in words is "two billion, fifteen million, three hundred forty-four thousand, two hundred forty".