2287128 has 32 divisors (see below), whose sum is σ = 5756400. Its totient is φ = 757248.

The previous prime is 2287121. The next prime is 2287133. The reversal of 2287128 is 8217822.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2287095 and 2287104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2287121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5388 + ... + 5796.

2^2287128 is an apocalyptic number.

It is an amenable number.

2287128 is an abundant number, since it is smaller than the sum of its proper divisors (3469272).

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

2287128 is a wasteful number, since it uses less digits than its factorization.

2287128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 647 counting only the distinct ones).

The product of its digits is 3584, while the sum is 30.

The square root of 2287128 is about 1512.3253618187. The cubic root of 2287128 is about 131.7539032698.

It can be divided in two parts, 2287 and 128, that added together give a triangular number (2415 = T₆₉).

The spelling of 2287128 in words is "two million, two hundred eighty-seven thousand, one hundred twenty-eight".