28617473 has 4 divisors (see below), whose sum is σ = 29020608. Its totient is φ = 28214340.

The previous prime is 28617431. The next prime is 28617481. The reversal of 28617473 is 37471682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28617473 - 2⁸ = 28617217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28617493) 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 3 ways as a sum of consecutive naturals, for example, 201461 + ... + 201602.

It is an arithmetic number, because the mean of its divisors is an integer number (7255152).

Almost surely, 2^28617473 is an apocalyptic number.

It is an amenable number.

28617473 is a deficient number, since it is larger than the sum of its proper divisors (403135).

28617473 is an equidigital number, since it uses as much as digits as its factorization.

28617473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403134.

The product of its digits is 56448, while the sum is 38.

The square root of 28617473 is about 5349.5301662856. The cubic root of 28617473 is about 305.8748438006.

The spelling of 28617473 in words is "twenty-eight million, six hundred seventeen thousand, four hundred seventy-three".