28542473 has 8 divisors (see below), whose sum is σ = 30424320. Its totient is φ = 26683200.

The previous prime is 28542457. The next prime is 28542491. The reversal of 28542473 is 37424582.

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

It is not a de Polignac number, because 28542473 - 2⁴ = 28542457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28542403) 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 7 ways as a sum of consecutive naturals, for example, 2993 + ... + 8126.

It is an arithmetic number, because the mean of its divisors is an integer number (3803040).

Almost surely, 2^28542473 is an apocalyptic number.

It is an amenable number.

28542473 is a deficient number, since it is larger than the sum of its proper divisors (1881847).

28542473 is a wasteful number, since it uses less digits than its factorization.

28542473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11287.

The product of its digits is 53760, while the sum is 35.

The square root of 28542473 is about 5342.5156059669. The cubic root of 28542473 is about 305.6074001628.

The spelling of 28542473 in words is "twenty-eight million, five hundred forty-two thousand, four hundred seventy-three".