28022037 has 4 divisors (see below), whose sum is σ = 37362720. Its totient is φ = 18681356.

The previous prime is 28022009. The next prime is 28022041. The reversal of 28022037 is 73022082.

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 28022037 - 2⁸ = 28021781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28021998 and 28022016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28022087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4670337 + ... + 4670342.

It is an arithmetic number, because the mean of its divisors is an integer number (9340680).

Almost surely, 2^28022037 is an apocalyptic number.

It is an amenable number.

28022037 is a deficient number, since it is larger than the sum of its proper divisors (9340683).

28022037 is an equidigital number, since it uses as much as digits as its factorization.

28022037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340682.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 28022037 is about 5293.5845133520. The cubic root of 28022037 is about 303.7385397631.

The spelling of 28022037 in words is "twenty-eight million, twenty-two thousand, thirty-seven".