2723838 has 32 divisors (see below), whose sum is σ = 5999616. Its totient is φ = 819168.

The previous prime is 2723837. The next prime is 2723839. The reversal of 2723838 is 8383272.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2723837) and next prime (2723839).

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2723799 and 2723808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2723837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3295 + ... + 4037.

It is an arithmetic number, because the mean of its divisors is an integer number (187488).

2^2723838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2723838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2999808).

2723838 is an abundant number, since it is smaller than the sum of its proper divisors (3275778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2723838 is a wasteful number, since it uses less digits than its factorization.

2723838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808.

The product of its digits is 16128, while the sum is 33.

The square root of 2723838 is about 1650.4054047415. The cubic root of 2723838 is about 139.6562655817.

The spelling of 2723838 in words is "two million, seven hundred twenty-three thousand, eight hundred thirty-eight".