2015636 has 12 divisors (see below), whose sum is σ = 4031328. Its totient is φ = 863832.

The previous prime is 2015633. The next prime is 2015669. The reversal of 2015636 is 6365102.

2015636 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35966 + ... + 36021.

It is an arithmetic number, because the mean of its divisors is an integer number (335944).

2^2015636 is an apocalyptic number.

It is an amenable number.

2015636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2015636 is a wasteful number, since it uses less digits than its factorization.

2015636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71998 (or 71996 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2015636 is about 1419.7309604288. The cubic root of 2015636 is about 126.3195884701.

The spelling of 2015636 in words is "two million, fifteen thousand, six hundred thirty-six".