2228988 has 12 divisors (see below), whose sum is σ = 5201000. Its totient is φ = 742992.

The previous prime is 2228987. The next prime is 2229037. The reversal of 2228988 is 8898222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228981) 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, 92863 + ... + 92886.

2^2228988 is an apocalyptic number.

It is an amenable number.

2228988 is an abundant number, since it is smaller than the sum of its proper divisors (2972012).

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

2228988 is a wasteful number, since it uses less digits than its factorization.

2228988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185756 (or 185754 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 2228988 is about 1492.9795711931. The cubic root of 2228988 is about 130.6278894838.

It can be divided in two parts, 22 and 28988, that multiplied together give a palindrome (637736).

The spelling of 2228988 in words is "two million, two hundred twenty-eight thousand, nine hundred eighty-eight".