2015583872 has 16 divisors (see below), whose sum is σ = 4015421250. Its totient is φ = 1007791872.

The previous prime is 2015583851. The next prime is 2015583877. The reversal of 2015583872 is 2783855102.

It can be written as a sum of positive squares in only one way, i.e., 1735222336 + 280361536 = 41656^2 + 16744^2 .

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 (2015583877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7873247 + ... + 7873502.

Almost surely, 2^2015583872 is an apocalyptic number.

It is an amenable number.

2015583872 is a deficient number, since it is larger than the sum of its proper divisors (1999837378).

2015583872 is an equidigital number, since it uses as much as digits as its factorization.

2015583872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15746763 (or 15746751 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 2015583872 is about 44895.2544485495. The cubic root of 2015583872 is about 1263.1849950950.

The spelling of 2015583872 in words is "two billion, fifteen million, five hundred eighty-three thousand, eight hundred seventy-two".