2789826 has 32 divisors (see below), whose sum is σ = 6144768. Its totient is φ = 839040.

The previous prime is 2789821. The next prime is 2789849. The reversal of 2789826 is 6289872.

It is a happy number.

It is a super-2 number, since 2×2789826² = 15566258220552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2789821) 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, 3286 + ... + 4046.

It is an arithmetic number, because the mean of its divisors is an integer number (192024).

2^2789826 is an apocalyptic number.

2789826 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2789826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3072384).

2789826 is an abundant number, since it is smaller than the sum of its proper divisors (3354942).

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

2789826 is a wasteful number, since it uses less digits than its factorization.

2789826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826.

The product of its digits is 96768, while the sum is 42.

The square root of 2789826 is about 1670.2772224993. The cubic root of 2789826 is about 140.7750550355.

The spelling of 2789826 in words is "two million, seven hundred eighty-nine thousand, eight hundred twenty-six".