2189880 has 192 divisors, whose sum is σ = 8985600. Its totient is φ = 449280.

The previous prime is 2189879. The next prime is 2189881. The reversal of 2189880 is 889812.

It is an interprime number because it is at equal distance from previous prime (2189879) and next prime (2189881).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27681 + ... + 27759.

It is an arithmetic number, because the mean of its divisors is an integer number (46800).

2^2189880 is an apocalyptic number.

2189880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4492800).

2189880 is an abundant number, since it is smaller than the sum of its proper divisors (6795720).

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

2189880 is a wasteful number, since it uses less digits than its factorization.

2189880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 2189880 is about 1479.8243138968. The cubic root of 2189880 is about 129.8594140959.

The spelling of 2189880 in words is "two million, one hundred eighty-nine thousand, eight hundred eighty".