2188500 has 48 divisors (see below), whose sum is σ = 6377280. Its totient is φ = 583200.

The previous prime is 2188493. The next prime is 2188531. The reversal of 2188500 is 58812.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 771 + ... + 2229.

It is an arithmetic number, because the mean of its divisors is an integer number (132860).

2^2188500 is an apocalyptic number.

2188500 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 2188500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3188640).

2188500 is an abundant number, since it is smaller than the sum of its proper divisors (4188780).

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

2188500 is a wasteful number, since it uses less digits than its factorization.

2188500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1469 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 2188500 is about 1479.3579688500. The cubic root of 2188500 is about 129.8321304627.

The spelling of 2188500 in words is "two million, one hundred eighty-eight thousand, five hundred".