28942473 has 24 divisors (see below), whose sum is σ = 45530688. Its totient is φ = 16008192.

The previous prime is 28942471. The next prime is 28942489. The reversal of 28942473 is 37424982.

It is not a de Polignac number, because 28942473 - 2¹ = 28942471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28942471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149865 + ... + 150057.

It is an arithmetic number, because the mean of its divisors is an integer number (1897112).

Almost surely, 2^28942473 is an apocalyptic number.

It is an amenable number.

28942473 is a deficient number, since it is larger than the sum of its proper divisors (16588215).

28942473 is an equidigital number, since it uses as much as digits as its factorization.

28942473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 240 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 28942473 is about 5379.8209077998. The cubic root of 28942473 is about 307.0283973208.

The spelling of 28942473 in words is "twenty-eight million, nine hundred forty-two thousand, four hundred seventy-three".