2189012 has 12 divisors (see below), whose sum is σ = 4378080. Its totient is φ = 938136.

The previous prime is 2188993. The next prime is 2189017. The reversal of 2189012 is 2109812.

2189012 is an admirable number.

It is a super-2 number, since 2×2189012² = 9583547072288, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189017) 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, 39062 + ... + 39117.

It is an arithmetic number, because the mean of its divisors is an integer number (364840).

2^2189012 is an apocalyptic number.

It is an amenable number.

2189012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2189012 is a wasteful number, since it uses less digits than its factorization.

2189012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78190 (or 78188 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 2189012 is about 1479.5310067721. The cubic root of 2189012 is about 129.8422544240.

The spelling of 2189012 in words is "two million, one hundred eighty-nine thousand, twelve".