28430673 has 4 divisors (see below), whose sum is σ = 37907568. Its totient is φ = 18953780.

The previous prime is 28430663. The next prime is 28430683. The reversal of 28430673 is 37603482.

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 an interprime number because it is at equal distance from previous prime (28430663) and next prime (28430683).

It is a cyclic number.

It is not a de Polignac number, because 28430673 - 2⁴ = 28430657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28430663) 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, 4738443 + ... + 4738448.

It is an arithmetic number, because the mean of its divisors is an integer number (9476892).

Almost surely, 2^28430673 is an apocalyptic number.

It is an amenable number.

28430673 is a deficient number, since it is larger than the sum of its proper divisors (9476895).

28430673 is an equidigital number, since it uses as much as digits as its factorization.

28430673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476894.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 28430673 is about 5332.0421041098. The cubic root of 28430673 is about 305.2078597432.

The spelling of 28430673 in words is "twenty-eight million, four hundred thirty thousand, six hundred seventy-three".