2231028 has 36 divisors (see below), whose sum is σ = 5836740. Its totient is φ = 717696.

The previous prime is 2231027. The next prime is 2231051. The reversal of 2231028 is 8201322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 535824 + 1695204 = 732^2 + 1302^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×2231028³ = 33314731483714001856, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁷ + 3⁵ + 1 + 0 + 2²¹ + 8³ .

It is a self number, because there is not a number n which added to its sum of digits gives 2231028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231027) 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, 25 + ... + 2112.

2^2231028 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 2231028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2918370).

2231028 is an abundant number, since it is smaller than the sum of its proper divisors (3605712).

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

2231028 is a wasteful number, since it uses less digits than its factorization.

2231028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2231028 is about 1493.6626125066. The cubic root of 2231028 is about 130.6677281371.

The spelling of 2231028 in words is "two million, two hundred thirty-one thousand, twenty-eight".