28946503 has 4 divisors (see below), whose sum is σ = 28959840. Its totient is φ = 28933168.

The previous prime is 28946497. The next prime is 28946507. The reversal of 28946503 is 30564982.

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 28946503 - 2²¹ = 26849351 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 (28946507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2575 + ... + 8032.

It is an arithmetic number, because the mean of its divisors is an integer number (7239960).

Almost surely, 2^28946503 is an apocalyptic number.

28946503 is a deficient number, since it is larger than the sum of its proper divisors (13337).

28946503 is a wasteful number, since it uses less digits than its factorization.

28946503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13336.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 28946503 is about 5380.1954425467. The cubic root of 28946503 is about 307.0426470478.

The spelling of 28946503 in words is "twenty-eight million, nine hundred forty-six thousand, five hundred three".