2748631 has 4 divisors (see below), whose sum is σ = 2768832. Its totient is φ = 2728432.

The previous prime is 2748617. The next prime is 2748643. The reversal of 2748631 is 1368472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2748631 - 2⁷ = 2748503 is a prime.

It is a super-2 number, since 2×2748631² = 15109944748322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2748593 and 2748602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9895 + ... + 10168.

It is an arithmetic number, because the mean of its divisors is an integer number (692208).

2^2748631 is an apocalyptic number.

2748631 is a deficient number, since it is larger than the sum of its proper divisors (20201).

2748631 is a wasteful number, since it uses less digits than its factorization.

2748631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20200.

The product of its digits is 8064, while the sum is 31.

The square root of 2748631 is about 1657.8995747632. The cubic root of 2748631 is about 140.0787142385.

The spelling of 2748631 in words is "two million, seven hundred forty-eight thousand, six hundred thirty-one".