2771264240 has 20 divisors (see below), whose sum is σ = 6443189544. Its totient is φ = 1108505664.

The previous prime is 2771264213. The next prime is 2771264257. The reversal of 2771264240 is 424621772.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2771264240.

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, 17320322 + ... + 17320481.

Almost surely, 2^2771264240 is an apocalyptic number.

2771264240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2771264240 is an abundant number, since it is smaller than the sum of its proper divisors (3671925304).

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

2771264240 is a wasteful number, since it uses less digits than its factorization.

2771264240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34640816 (or 34640810 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 2771264240 is about 52642.7985578275. The cubic root of 2771264240 is about 1404.6215028031.

The spelling of 2771264240 in words is "two billion, seven hundred seventy-one million, two hundred sixty-four thousand, two hundred forty".