2193724 has 12 divisors (see below), whose sum is σ = 4134424. Its totient is φ = 1012464.

The previous prime is 2193713. The next prime is 2193733. The reversal of 2193724 is 4273912.

2193724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2³ + 1 + 9⁵ + 3⁹ + 7⁵ + 2²¹ + 4⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 2193692 and 2193701.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21042 + ... + 21145.

2^2193724 is an apocalyptic number.

It is an amenable number.

2193724 is a deficient number, since it is larger than the sum of its proper divisors (1940700).

2193724 is a wasteful number, since it uses less digits than its factorization.

2193724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42204 (or 42202 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 2193724 is about 1481.1225472593. The cubic root of 2193724 is about 129.9353524722.

The spelling of 2193724 in words is "two million, one hundred ninety-three thousand, seven hundred twenty-four".