2749281 has 16 divisors (see below), whose sum is σ = 3897600. Its totient is φ = 1718928.

The previous prime is 2749277. The next prime is 2749283. The reversal of 2749281 is 1829472.

It is a happy number.

It is not a de Polignac number, because 2749281 - 2² = 2749277 is a prime.

It is a super-2 number, since 2×2749281² = 15117092033922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2749283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7750 + ... + 8096.

It is an arithmetic number, because the mean of its divisors is an integer number (243600).

2^2749281 is an apocalyptic number.

It is an amenable number.

2749281 is a deficient number, since it is larger than the sum of its proper divisors (1148319).

2749281 is a wasteful number, since it uses less digits than its factorization.

2749281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508.

The product of its digits is 8064, while the sum is 33.

The square root of 2749281 is about 1658.0955943491. The cubic root of 2749281 is about 140.0897553698.

The spelling of 2749281 in words is "two million, seven hundred forty-nine thousand, two hundred eighty-one".