2858128 has 60 divisors (see below), whose sum is σ = 6898368. Its totient is φ = 1123200.

The previous prime is 2858123. The next prime is 2858129. The reversal of 2858128 is 8218582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2858093 and 2858102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2858123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18853 + ... + 19003.

2^2858128 is an apocalyptic number.

2858128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2858128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3449184).

2858128 is an abundant number, since it is smaller than the sum of its proper divisors (4040240).

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

2858128 is a wasteful number, since it uses less digits than its factorization.

2858128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 173 counting only the distinct ones).

The product of its digits is 10240, while the sum is 34.

The square root of 2858128 is about 1690.5998935289. The cubic root of 2858128 is about 141.9146481723.

The spelling of 2858128 in words is "two million, eight hundred fifty-eight thousand, one hundred twenty-eight".