2775256992 has 120 divisors (see below), whose sum is σ = 8243542692. Its totient is φ = 915840000.

The previous prime is 2775256951. The next prime is 2775256997. The reversal of 2775256992 is 2996525772.

2775256992 is a `hidden beast` number, since 2 + 7 + 75 + 2 + 569 + 9 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2160018576 + 615238416 = 46476^2 + 24804^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2775256997) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 256492 + ... + 267092.

Almost surely, 2^2775256992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2775256992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4121771346).

2775256992 is an abundant number, since it is smaller than the sum of its proper divisors (5468285700).

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

2775256992 is a wasteful number, since it uses less digits than its factorization.

2775256992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10724 (or 10707 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The square root of 2775256992 is about 52680.7079679079. The cubic root of 2775256992 is about 1405.2957575305.

The spelling of 2775256992 in words is "two billion, seven hundred seventy-five million, two hundred fifty-six thousand, nine hundred ninety-two".