2199240 has 96 divisors (see below), whose sum is σ = 7371000. Its totient is φ = 568320.

The previous prime is 2199229. The next prime is 2199247. The reversal of 2199240 is 429912.

It can be written as a sum of positive squares in 4 ways, for example, as 715716 + 1483524 = 846^2 + 1218^2 .

It is not an unprimeable number, because it can be changed into a prime (2199247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14686 + ... + 14834.

2^2199240 is an apocalyptic number.

2199240 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 2199240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3685500).

2199240 is an abundant number, since it is smaller than the sum of its proper divisors (5171760).

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

2199240 is a wasteful number, since it uses less digits than its factorization.

2199240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 2199240 is about 1482.9834793416. The cubic root of 2199240 is about 130.0441664527.

The spelling of 2199240 in words is "two million, one hundred ninety-nine thousand, two hundred forty".