28823479 has 4 divisors (see below), whose sum is σ = 28895760. Its totient is φ = 28751200.

The previous prime is 28823471. The next prime is 28823489. The reversal of 28823479 is 97432882.

It is a happy number.

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 28823479 - 2³ = 28823471 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 (28823471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35539 + ... + 36340.

It is an arithmetic number, because the mean of its divisors is an integer number (7223940).

Almost surely, 2^28823479 is an apocalyptic number.

28823479 is a deficient number, since it is larger than the sum of its proper divisors (72281).

28823479 is an equidigital number, since it uses as much as digits as its factorization.

28823479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72280.

The product of its digits is 193536, while the sum is 43.

The square root of 28823479 is about 5368.7502270081. The cubic root of 28823479 is about 306.6070474576.

The spelling of 28823479 in words is "twenty-eight million, eight hundred twenty-three thousand, four hundred seventy-nine".