2158528 has 28 divisors (see below), whose sum is σ = 4434840. Its totient is φ = 1041152.

The previous prime is 2158523. The next prime is 2158547. The reversal of 2158528 is 8258512.

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 2158528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275 + ... + 2437.

2^2158528 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 2158528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2217420).

2158528 is an abundant number, since it is smaller than the sum of its proper divisors (2276312).

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

2158528 is a wasteful number, since it uses less digits than its factorization.

2158528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1194 counting only the distinct ones).

The product of its digits is 6400, while the sum is 31.

The square root of 2158528 is about 1469.1929757523. The cubic root of 2158528 is about 129.2367105821.

The spelling of 2158528 in words is "two million, one hundred fifty-eight thousand, five hundred twenty-eight".