28879503 has 4 divisors (see below), whose sum is σ = 38506008. Its totient is φ = 19253000.

The previous prime is 28879493. The next prime is 28879511. The reversal of 28879503 is 30597882.

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 28879503 - 2⁶ = 28879439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28879303) 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, 4813248 + ... + 4813253.

It is an arithmetic number, because the mean of its divisors is an integer number (9626502).

Almost surely, 2^28879503 is an apocalyptic number.

28879503 is a deficient number, since it is larger than the sum of its proper divisors (9626505).

28879503 is an equidigital number, since it uses as much as digits as its factorization.

28879503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9626504.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 28879503 is about 5373.9652957569. The cubic root of 28879503 is about 306.8055689021.

The spelling of 28879503 in words is "twenty-eight million, eight hundred seventy-nine thousand, five hundred three".