2771645248 has 28 divisors (see below), whose sum is σ = 5502269412. Its totient is φ = 1385246720.

The previous prime is 2771645221. The next prime is 2771645251. The reversal of 2771645248 is 8425461772.

It can be written as a sum of positive squares in 2 ways, for example, as 1613468224 + 1158177024 = 40168^2 + 34032^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2771645198 and 2771645207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175536 + ... + 190672.

Almost surely, 2^2771645248 is an apocalyptic number.

It is an amenable number.

2771645248 is a deficient number, since it is larger than the sum of its proper divisors (2730624164).

2771645248 is a wasteful number, since it uses less digits than its factorization.

2771645248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18010 (or 18000 counting only the distinct ones).

The product of its digits is 752640, while the sum is 46.

The square root of 2771645248 is about 52646.4172380229. The cubic root of 2771645248 is about 1404.6858714401.

The spelling of 2771645248 in words is "two billion, seven hundred seventy-one million, six hundred forty-five thousand, two hundred forty-eight".