28030673 has 4 divisors (see below), whose sum is σ = 30578928. Its totient is φ = 25482420.

The previous prime is 28030669. The next prime is 28030679. The reversal of 28030673 is 37603082.

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 28030673 - 2² = 28030669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28030679) 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, 1274111 + ... + 1274132.

It is an arithmetic number, because the mean of its divisors is an integer number (7644732).

Almost surely, 2^28030673 is an apocalyptic number.

It is an amenable number.

28030673 is a deficient number, since it is larger than the sum of its proper divisors (2548255).

28030673 is a wasteful number, since it uses less digits than its factorization.

28030673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548254.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 28030673 is about 5294.4001548806. The cubic root of 28030673 is about 303.7697392152.

It can be divided in two parts, 280 and 30673, that multiplied together give a triangular number (8588440 = T₄₁₄₄).

The spelling of 28030673 in words is "twenty-eight million, thirty thousand, six hundred seventy-three".