2187650872 has 16 divisors (see below), whose sum is σ = 4474740600. Its totient is φ = 994386720.

The previous prime is 2187650867. The next prime is 2187650879. The reversal of 2187650872 is 2780567812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187650879) 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, 12429747 + ... + 12429922.

Almost surely, 2^2187650872 is an apocalyptic number.

2187650872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2187650872 is an abundant number, since it is smaller than the sum of its proper divisors (2287089728).

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

2187650872 is a wasteful number, since it uses less digits than its factorization.

2187650872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24859686 (or 24859682 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 2187650872 is about 46772.3301963885. The cubic root of 2187650872 is about 1298.1533686613.

The spelling of 2187650872 in words is "two billion, one hundred eighty-seven million, six hundred fifty thousand, eight hundred seventy-two".