28812463 has 4 divisors (see below), whose sum is σ = 29515248. Its totient is φ = 28109680.

The previous prime is 28812437. The next prime is 28812503. The reversal of 28812463 is 36421882.

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 28812463 - 2⁵ = 28812431 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 (28812403) 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, 351331 + ... + 351412.

It is an arithmetic number, because the mean of its divisors is an integer number (7378812).

Almost surely, 2^28812463 is an apocalyptic number.

28812463 is a deficient number, since it is larger than the sum of its proper divisors (702785).

28812463 is an equidigital number, since it uses as much as digits as its factorization.

28812463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702784.

The product of its digits is 18432, while the sum is 34.

The square root of 28812463 is about 5367.7241918713. The cubic root of 28812463 is about 306.5679819257.

The spelling of 28812463 in words is "twenty-eight million, eight hundred twelve thousand, four hundred sixty-three".