2128828 has 12 divisors (see below), whose sum is σ = 4012120. Its totient is φ = 982512.

The previous prime is 2128823. The next prime is 2128831. The reversal of 2128828 is 8288212.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 2128828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128823) 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, 20418 + ... + 20521.

2^2128828 is an apocalyptic number.

It is an amenable number.

2128828 is a deficient number, since it is larger than the sum of its proper divisors (1883292).

2128828 is a wasteful number, since it uses less digits than its factorization.

2128828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40956 (or 40954 counting only the distinct ones).

The product of its digits is 4096, while the sum is 31.

The square root of 2128828 is about 1459.0503761008. The cubic root of 2128828 is about 128.6412321720.

It can be divided in two parts, 21288 and 28, that added together give a square (21316 = 146²).

The spelling of 2128828 in words is "two million, one hundred twenty-eight thousand, eight hundred twenty-eight".