28241724 has 24 divisors (see below), whose sum is σ = 75311488. Its totient is φ = 8069040.

The previous prime is 28241711. The next prime is 28241749. The reversal of 28241724 is 42714282.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28241691 and 28241700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168022 + ... + 168189.

Almost surely, 2^28241724 is an apocalyptic number.

It is an amenable number.

28241724 is an abundant number, since it is smaller than the sum of its proper divisors (47069764).

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

28241724 is a wasteful number, since it uses less digits than its factorization.

28241724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336225 (or 336223 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 28241724 is about 5314.2943087488. The cubic root of 28241724 is about 304.5302236765.

The spelling of 28241724 in words is "twenty-eight million, two hundred forty-one thousand, seven hundred twenty-four".