2782423 has 4 divisors (see below), whose sum is σ = 3179920. Its totient is φ = 2384928.

The previous prime is 2782421. The next prime is 2782469. The reversal of 2782423 is 3242872.

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

It is not a de Polignac number, because 2782423 - 2¹ = 2782421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2782391 and 2782400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782421) 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, 198738 + ... + 198751.

It is an arithmetic number, because the mean of its divisors is an integer number (794980).

2^2782423 is an apocalyptic number.

2782423 is a deficient number, since it is larger than the sum of its proper divisors (397497).

2782423 is an equidigital number, since it uses as much as digits as its factorization.

2782423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397496.

The product of its digits is 5376, while the sum is 28.

The square root of 2782423 is about 1668.0596512116. The cubic root of 2782423 is about 140.6504258882.

It can be divided in two parts, 278 and 2423, that added together give a triangular number (2701 = T₇₃).

The spelling of 2782423 in words is "two million, seven hundred eighty-two thousand, four hundred twenty-three".