2015872 has 16 divisors (see below), whose sum is σ = 4016250. Its totient is φ = 1007872.

The previous prime is 2015869. The next prime is 2015873. The reversal of 2015872 is 2785102.

It can be written as a sum of positive squares in only one way, i.e., 2005056 + 10816 = 1416^2 + 104^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (2015873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7747 + ... + 8002.

2^2015872 is an apocalyptic number.

It is an amenable number.

2015872 is a deficient number, since it is larger than the sum of its proper divisors (2000378).

2015872 is an equidigital number, since it uses as much as digits as its factorization.

2015872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15763 (or 15751 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2015872 is about 1419.8140723348. The cubic root of 2015872 is about 126.3245183052.

The spelling of 2015872 in words is "two million, fifteen thousand, eight hundred seventy-two".