28324037 has 4 divisors (see below), whose sum is σ = 32370336. Its totient is φ = 24277740.

The previous prime is 28324019. The next prime is 28324067. The reversal of 28324037 is 73042382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28324037 - 2¹⁸ = 28061893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28324067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2023139 + ... + 2023152.

It is an arithmetic number, because the mean of its divisors is an integer number (8092584).

Almost surely, 2^28324037 is an apocalyptic number.

It is an amenable number.

28324037 is a deficient number, since it is larger than the sum of its proper divisors (4046299).

28324037 is an equidigital number, since it uses as much as digits as its factorization.

28324037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4046298.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 28324037 is about 5322.0331641206. The cubic root of 28324037 is about 304.8257967858.

The spelling of 28324037 in words is "twenty-eight million, three hundred twenty-four thousand, thirty-seven".