2787972975 has 72 divisors (see below), whose sum is σ = 5148715104. Its totient is φ = 1441440000.

The previous prime is 2787972973. The next prime is 2787972989. The reversal of 2787972975 is 5792797872.

2787972975 is a `hidden beast` number, since 278 + 79 + 7 + 297 + 5 = 666.

It is not a de Polignac number, because 2787972975 - 2¹ = 2787972973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787972973) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 973045 + ... + 975905.

It is an arithmetic number, because the mean of its divisors is an integer number (71509932).

Almost surely, 2^2787972975 is an apocalyptic number.

2787972975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2787972975 is a deficient number, since it is larger than the sum of its proper divisors (2360742129).

2787972975 is a wasteful number, since it uses less digits than its factorization.

2787972975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009 (or 3001 counting only the distinct ones).

The product of its digits is 31116960, while the sum is 63.

The square root of 2787972975 is about 52801.2592179391. The cubic root of 2787972975 is about 1407.4388015545.

The spelling of 2787972975 in words is "two billion, seven hundred eighty-seven million, nine hundred seventy-two thousand, nine hundred seventy-five".