2787187872 has 96 divisors (see below), whose sum is σ = 8565588864. Its totient is φ = 776908800.

The previous prime is 2787187811. The next prime is 2787187877. The reversal of 2787187872 is 2787817872.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (2787187877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23029 + ... + 78132.

It is an arithmetic number, because the mean of its divisors is an integer number (89224884).

Almost surely, 2^2787187872 is an apocalyptic number.

It is an amenable number.

2787187872 is an abundant number, since it is smaller than the sum of its proper divisors (5778400992).

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

2787187872 is a wasteful number, since it uses less digits than its factorization.

2787187872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101222 (or 101214 counting only the distinct ones).

The product of its digits is 4917248, while the sum is 57.

The square root of 2787187872 is about 52793.8241842737. The cubic root of 2787187872 is about 1407.3066759117.

The spelling of 2787187872 in words is "two billion, seven hundred eighty-seven million, one hundred eighty-seven thousand, eight hundred seventy-two".