28003463 has 4 divisors (see below), whose sum is σ = 28092120. Its totient is φ = 27914808.

The previous prime is 28003441. The next prime is 28003483. The reversal of 28003463 is 36430082.

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 28003463 - 2¹⁶ = 27937927 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 (28003433) 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, 43853 + ... + 44486.

It is an arithmetic number, because the mean of its divisors is an integer number (7023030).

Almost surely, 2^28003463 is an apocalyptic number.

28003463 is a deficient number, since it is larger than the sum of its proper divisors (88657).

28003463 is an equidigital number, since it uses as much as digits as its factorization.

28003463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88656.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 28003463 is about 5291.8298347547. The cubic root of 28003463 is about 303.6714153710.

The spelling of 28003463 in words is "twenty-eight million, three thousand, four hundred sixty-three".