2163834 has 60 divisors (see below), whose sum is σ = 5255514. Its totient is φ = 664848.

The previous prime is 2163829. The next prime is 2163851. The reversal of 2163834 is 4383612.

It is a happy number.

2163834 is a `hidden beast` number, since 21 + 638 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1432809 + 731025 = 1197^2 + 855^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2163798 and 2163807.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 58464 + ... + 58500.

2^2163834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2163834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2627757).

2163834 is an abundant number, since it is smaller than the sum of its proper divisors (3091680).

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

2163834 is a wasteful number, since it uses less digits than its factorization.

2163834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 61 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 2163834 is about 1470.9976206643. The cubic root of 2163834 is about 129.3425186259.

The spelling of 2163834 in words is "two million, one hundred sixty-three thousand, eight hundred thirty-four".