28870503 has 8 divisors (see below), whose sum is σ = 38847600. Its totient is φ = 19070208.

The previous prime is 28870493. The next prime is 28870511. The reversal of 28870503 is 30507882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28870503 - 2¹⁶ = 28804967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28870553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43818 + ... + 44471.

It is an arithmetic number, because the mean of its divisors is an integer number (4855950).

Almost surely, 2^28870503 is an apocalyptic number.

28870503 is a deficient number, since it is larger than the sum of its proper divisors (9977097).

28870503 is a wasteful number, since it uses less digits than its factorization.

28870503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88401.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28870503 is about 5373.1278600085. The cubic root of 28870503 is about 306.7736946578.

The spelling of 28870503 in words is "twenty-eight million, eight hundred seventy thousand, five hundred three".