2015868 has 24 divisors (see below), whose sum is σ = 4856320. Its totient is φ = 650160.

The previous prime is 2015863. The next prime is 2015869. The reversal of 2015868 is 8685102.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015861) 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, 2338 + ... + 3081.

2^2015868 is an apocalyptic number.

It is an amenable number.

2015868 is an abundant number, since it is smaller than the sum of its proper divisors (2840452).

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

2015868 is a wasteful number, since it uses less digits than its factorization.

2015868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5457 (or 5455 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 2015868 is about 1419.8126636990. The cubic root of 2015868 is about 126.3244347519.

The spelling of 2015868 in words is "two million, fifteen thousand, eight hundred sixty-eight".