28474463 has 4 divisors (see below), whose sum is σ = 28521528. Its totient is φ = 28427400.

The previous prime is 28474451. The next prime is 28474469. The reversal of 28474463 is 36447482.

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 28474463 - 2²⁰ = 27425887 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 (28474469) 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, 22613 + ... + 23838.

It is an arithmetic number, because the mean of its divisors is an integer number (7130382).

Almost surely, 2^28474463 is an apocalyptic number.

28474463 is a deficient number, since it is larger than the sum of its proper divisors (47065).

28474463 is an equidigital number, since it uses as much as digits as its factorization.

28474463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47064.

The product of its digits is 129024, while the sum is 38.

The square root of 28474463 is about 5336.1468308134. The cubic root of 28474463 is about 305.3644769321.

It can be divided in two parts, 284 and 74463, that added together give a palindrome (74747).

The spelling of 28474463 in words is "twenty-eight million, four hundred seventy-four thousand, four hundred sixty-three".