28036023 has 4 divisors (see below), whose sum is σ = 37381368. Its totient is φ = 18690680.

The previous prime is 28036013. The next prime is 28036051. The reversal of 28036023 is 32063082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28036023 - 2¹⁴ = 28019639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28035984 and 28036002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28036003) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4672668 + ... + 4672673.

It is an arithmetic number, because the mean of its divisors is an integer number (9345342).

Almost surely, 2^28036023 is an apocalyptic number.

28036023 is a deficient number, since it is larger than the sum of its proper divisors (9345345).

28036023 is an equidigital number, since it uses as much as digits as its factorization.

28036023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9345344.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 28036023 is about 5294.9053815909. The cubic root of 28036023 is about 303.7890640541.

The spelling of 28036023 in words is "twenty-eight million, thirty-six thousand, twenty-three".