2219724 has 120 divisors (see below), whose sum is σ = 6830208. Its totient is φ = 622080.

The previous prime is 2219683. The next prime is 2219731. The reversal of 2219724 is 4279122.

2219724 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2219724³ = 32810903376333406272, which contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71589 + ... + 71619.

2^2219724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2219724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3415104).

2219724 is an abundant number, since it is smaller than the sum of its proper divisors (4610484).

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

2219724 is a wasteful number, since it uses less digits than its factorization.

2219724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 66 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 2219724 is about 1489.8738201606. The cubic root of 2219724 is about 130.4466686560.

The spelling of 2219724 in words is "two million, two hundred nineteen thousand, seven hundred twenty-four".