2748623 has 4 divisors (see below), whose sum is σ = 2787408. Its totient is φ = 2709840.

The previous prime is 2748617. The next prime is 2748643. The reversal of 2748623 is 3268472.

2748623 = T₂₄₂ + T₂₄₃ + ... + T₃₁₂.

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 2748623 - 2²⁰ = 1700047 is a prime.

It is a super-2 number, since 2×2748623² = 15109856792258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2748623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748643) 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, 19286 + ... + 19427.

It is an arithmetic number, because the mean of its divisors is an integer number (696852).

2^2748623 is an apocalyptic number.

2748623 is a deficient number, since it is larger than the sum of its proper divisors (38785).

2748623 is an equidigital number, since it uses as much as digits as its factorization.

2748623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38784.

The product of its digits is 16128, while the sum is 32.

The square root of 2748623 is about 1657.8971620701. The cubic root of 2748623 is about 140.0785783368.

The spelling of 2748623 in words is "two million, seven hundred forty-eight thousand, six hundred twenty-three".