2158056 has 64 divisors (see below), whose sum is σ = 6115200. Its totient is φ = 705024.

The previous prime is 2158033. The next prime is 2158061. The reversal of 2158056 is 6508512.

2158056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

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, 20901 + ... + 21003.

It is an arithmetic number, because the mean of its divisors is an integer number (95550).

2^2158056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2158056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3057600).

2158056 is an abundant number, since it is smaller than the sum of its proper divisors (3957144).

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

2158056 is a wasteful number, since it uses less digits than its factorization.

2158056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2158056 is about 1469.0323345659. The cubic root of 2158056 is about 129.2272899377.

The spelling of 2158056 in words is "two million, one hundred fifty-eight thousand, fifty-six".