2751866856 has 48 divisors (see below), whose sum is σ = 7476545700. Its totient is φ = 914387712.

The previous prime is 2751866837. The next prime is 2751866879. The reversal of 2751866856 is 6586681572.

It can be written as a sum of positive squares in 2 ways, for example, as 2030944356 + 720922500 = 45066^2 + 26850^2 .

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 37461 + ... + 83108.

Almost surely, 2^2751866856 is an apocalyptic number.

It is an amenable number.

2751866856 is an abundant number, since it is smaller than the sum of its proper divisors (4724678844).

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

2751866856 is a wasteful number, since it uses less digits than its factorization.

2751866856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120898 (or 120891 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The square root of 2751866856 is about 52458.2391622136. The cubic root of 2751866856 is about 1401.3366241569.

The spelling of 2751866856 in words is "two billion, seven hundred fifty-one million, eight hundred sixty-six thousand, eight hundred fifty-six".