2158326 has 24 divisors (see below), whose sum is σ = 4850664. Its totient is φ = 719280.

The previous prime is 2158307. The next prime is 2158333. The reversal of 2158326 is 6238512.

It is a super-2 number, since 2×2158326² = 9316742244552, which contains 22 as substring.

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

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2158326.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1735 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (202111).

2^2158326 is an apocalyptic number.

2158326 is an abundant number, since it is smaller than the sum of its proper divisors (2692338).

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

2158326 is an equidigital number, since it uses as much as digits as its factorization.

2158326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4458 (or 4446 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2158326 is about 1469.1242289201. The cubic root of 2158326 is about 129.2326790338.

It can be divided in two parts, 21583 and 26, that added together give a square (21609 = 147²).

The spelling of 2158326 in words is "two million, one hundred fifty-eight thousand, three hundred twenty-six".