2199724 has 24 divisors (see below), whose sum is σ = 4021920. Its totient is φ = 1051776.

The previous prime is 2199719. The next prime is 2199739. The reversal of 2199724 is 4279912.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2199724.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13089 + ... + 13255.

It is an arithmetic number, because the mean of its divisors is an integer number (167580).

2^2199724 is an apocalyptic number.

It is an amenable number.

2199724 is a deficient number, since it is larger than the sum of its proper divisors (1822196).

2199724 is a wasteful number, since it uses less digits than its factorization.

2199724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 2199724 is about 1483.1466549199. The cubic root of 2199724 is about 130.0537056207.

The spelling of 2199724 in words is "two million, one hundred ninety-nine thousand, seven hundred twenty-four".