2159724 has 36 divisors (see below), whose sum is σ = 5863704. Its totient is φ = 616896.

The previous prime is 2159719. The next prime is 2159767. The reversal of 2159724 is 4279512.

2159724 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2159691 and 2159700.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1249 + ... + 2424.

2^2159724 is an apocalyptic number.

It is an amenable number.

2159724 is an abundant number, since it is smaller than the sum of its proper divisors (3703980).

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

2159724 is a wasteful number, since it uses less digits than its factorization.

2159724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694 (or 3685 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 2159724 is about 1469.5999455634. The cubic root of 2159724 is about 129.2605753898.

The spelling of 2159724 in words is "two million, one hundred fifty-nine thousand, seven hundred twenty-four".