2015874840 has 128 divisors (see below), whose sum is σ = 6920962560. Its totient is φ = 460145664.

The previous prime is 2015874829. The next prime is 2015874871. The reversal of 2015874840 is 484785102.

It is a happy number.

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, 942252 + ... + 944388.

It is an arithmetic number, because the mean of its divisors is an integer number (54070020).

Almost surely, 2^2015874840 is an apocalyptic number.

2015874840 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 2015874840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3460481280).

2015874840 is an abundant number, since it is smaller than the sum of its proper divisors (4905087720).

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

2015874840 is a wasteful number, since it uses less digits than its factorization.

2015874840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281 (or 3277 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 2015874840 is about 44898.4948522776. The cubic root of 2015874840 is about 1263.2457762797.

The spelling of 2015874840 in words is "two billion, fifteen million, eight hundred seventy-four thousand, eight hundred forty".