28711673 has 4 divisors (see below), whose sum is σ = 29637888. Its totient is φ = 27785460.

The previous prime is 28711651. The next prime is 28711687. The reversal of 28711673 is 37611782.

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 28711673 - 2¹⁸ = 28449529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28711633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463061 + ... + 463122.

It is an arithmetic number, because the mean of its divisors is an integer number (7409472).

Almost surely, 2^28711673 is an apocalyptic number.

It is an amenable number.

28711673 is a deficient number, since it is larger than the sum of its proper divisors (926215).

28711673 is an equidigital number, since it uses as much as digits as its factorization.

28711673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926214.

The product of its digits is 14112, while the sum is 35.

The square root of 28711673 is about 5358.3274442684. The cubic root of 28711673 is about 306.2100918148.

The spelling of 28711673 in words is "twenty-eight million, seven hundred eleven thousand, six hundred seventy-three".