2389816 has 32 divisors (see below), whose sum is σ = 5266800. Its totient is φ = 1002240.

The previous prime is 2389813. The next prime is 2389831. The reversal of 2389816 is 6189832.

2389816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2389816² = 11422441027712, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389813) 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 7 ways as a sum of consecutive naturals, for example, 100 + ... + 2188.

2^2389816 is an apocalyptic number.

2389816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2389816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2633400).

2389816 is an abundant number, since it is smaller than the sum of its proper divisors (2876984).

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

2389816 is a wasteful number, since it uses less digits than its factorization.

2389816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2115 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 2389816 is about 1545.9029723757. The cubic root of 2389816 is about 133.6969463791.

The spelling of 2389816 in words is "two million, three hundred eighty-nine thousand, eight hundred sixteen".