2723819 has 4 divisors (see below), whose sum is σ = 3112944. Its totient is φ = 2334696.

The previous prime is 2723813. The next prime is 2723827. The reversal of 2723819 is 9183272.

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

It is not a de Polignac number, because 2723819 - 2⁸ = 2723563 is a prime.

It is a super-2 number, since 2×2723819² = 14838379889522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2723813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194552 + ... + 194565.

It is an arithmetic number, because the mean of its divisors is an integer number (778236).

2^2723819 is an apocalyptic number.

2723819 is a deficient number, since it is larger than the sum of its proper divisors (389125).

2723819 is an equidigital number, since it uses as much as digits as its factorization.

2723819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389124.

The product of its digits is 6048, while the sum is 32.

The square root of 2723819 is about 1650.3996485700. The cubic root of 2723819 is about 139.6559408591.

The spelling of 2723819 in words is "two million, seven hundred twenty-three thousand, eight hundred nineteen".