2749473 has 6 divisors (see below), whose sum is σ = 3971474. Its totient is φ = 1832976.

The previous prime is 2749447. The next prime is 2749499. The reversal of 2749473 is 3749472.

It is an interprime number because it is at equal distance from previous prime (2749447) and next prime (2749499).

It can be written as a sum of positive squares in only one way, i.e., 2712609 + 36864 = 1647^2 + 192^2 .

It is not a de Polignac number, because 2749473 - 2⁵ = 2749441 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2749573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152740 + ... + 152757.

2^2749473 is an apocalyptic number.

It is an amenable number.

2749473 is a deficient number, since it is larger than the sum of its proper divisors (1222001).

2749473 is a wasteful number, since it uses less digits than its factorization.

2749473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305503 (or 305500 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 2749473 is about 1658.1534910858. The cubic root of 2749473 is about 140.0930164172.

Subtracting 2749473 from its reverse (3749472), we obtain a palindrome (999999).

The spelling of 2749473 in words is "two million, seven hundred forty-nine thousand, four hundred seventy-three".