2745923 has 4 divisors (see below), whose sum is σ = 2840640. Its totient is φ = 2651208.

The previous prime is 2745913. The next prime is 2745929. The reversal of 2745923 is 3295472.

It is a happy number.

2745923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2745923 - 2⁴ = 2745907 is a prime.

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 2745923.

It is not an unprimeable number, because it can be changed into a prime (2745929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47315 + ... + 47372.

It is an arithmetic number, because the mean of its divisors is an integer number (710160).

2^2745923 is an apocalyptic number.

2745923 is a deficient number, since it is larger than the sum of its proper divisors (94717).

2745923 is an equidigital number, since it uses as much as digits as its factorization.

2745923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94716.

The product of its digits is 15120, while the sum is 32.

The square root of 2745923 is about 1657.0826774787. The cubic root of 2745923 is about 140.0326964449.

The spelling of 2745923 in words is "two million, seven hundred forty-five thousand, nine hundred twenty-three".