2185380 has 120 divisors (see below), whose sum is σ = 7318080. Its totient is φ = 544320.

The previous prime is 2185373. The next prime is 2185387. The reversal of 2185380 is 835812.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2185373) and next prime (2185387).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185387) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 30745 + ... + 30815.

It is an arithmetic number, because the mean of its divisors is an integer number (60984).

2^2185380 is an apocalyptic number.

2185380 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 2185380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3659040).

2185380 is an abundant number, since it is smaller than the sum of its proper divisors (5132700).

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

2185380 is a wasteful number, since it uses less digits than its factorization.

2185380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2185380 is about 1478.3030812388. The cubic root of 2185380 is about 129.7704034204.

The spelling of 2185380 in words is "two million, one hundred eighty-five thousand, three hundred eighty".