2015327440 has 160 divisors (see below), whose sum is σ = 5531074560. Its totient is φ = 668570112.

The previous prime is 2015327393. The next prime is 2015327477. The reversal of 2015327440 is 447235102.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2015327399 and 2015327408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3057831 + ... + 3058489.

It is an arithmetic number, because the mean of its divisors is an integer number (34569216).

Almost surely, 2^2015327440 is an apocalyptic number.

2015327440 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 2015327440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2765537280).

2015327440 is an abundant number, since it is smaller than the sum of its proper divisors (3515747120).

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

2015327440 is a wasteful number, since it uses less digits than its factorization.

2015327440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849 (or 843 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2015327440 is about 44892.3984656645. The cubic root of 2015327440 is about 1263.1314233902.

The spelling of 2015327440 in words is "two billion, fifteen million, three hundred twenty-seven thousand, four hundred forty".