2189240 has 32 divisors (see below), whose sum is σ = 4968000. Its totient is φ = 868224.

The previous prime is 2189227. The next prime is 2189249. The reversal of 2189240 is 429812.

2189240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9041 + ... + 9279.

It is an arithmetic number, because the mean of its divisors is an integer number (155250).

2^2189240 is an apocalyptic number.

2189240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2189240 is an abundant number, since it is smaller than the sum of its proper divisors (2778760).

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

2189240 is a wasteful number, since it uses less digits than its factorization.

2189240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 475 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2189240 is about 1479.6080562095. The cubic root of 2189240 is about 129.8467622425.

The spelling of 2189240 in words is "two million, one hundred eighty-nine thousand, two hundred forty".