2671987140 has 36 divisors (see below), whose sum is σ = 8105028204. Its totient is φ = 712529856.

The previous prime is 2671987133. The next prime is 2671987159. The reversal of 2671987140 is 417891762.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 502477056 + 2169510084 = 22416^2 + 46578^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7422007 + ... + 7422366.

Almost surely, 2^2671987140 is an apocalyptic number.

2671987140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2671987140 is an abundant number, since it is smaller than the sum of its proper divisors (5433041064).

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

2671987140 is a wasteful number, since it uses less digits than its factorization.

2671987140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14844388 (or 14844383 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 2671987140 is about 51691.2675410460. The cubic root of 2671987140 is about 1387.6441885704.

The spelling of 2671987140 in words is "two billion, six hundred seventy-one million, nine hundred eighty-seven thousand, one hundred forty".