2158026 has 32 divisors (see below), whose sum is σ = 4724160. Its totient is φ = 653184.

The previous prime is 2158019. The next prime is 2158027. The reversal of 2158026 is 6208512.

2158026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2157987 and 2158005.

It is not an unprimeable number, because it can be changed into a prime (2158027) 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 15 ways as a sum of consecutive naturals, for example, 5505 + ... + 5883.

It is an arithmetic number, because the mean of its divisors is an integer number (147630).

2^2158026 is an apocalyptic number.

2158026 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 2158026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2362080).

2158026 is an abundant number, since it is smaller than the sum of its proper divisors (2566134).

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

2158026 is a wasteful number, since it uses less digits than its factorization.

2158026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 2158026 is about 1469.0221237272. The cubic root of 2158026 is about 129.2266911215.

The spelling of 2158026 in words is "two million, one hundred fifty-eight thousand, twenty-six".