28464673 has 4 divisors (see below), whose sum is σ = 28477440. Its totient is φ = 28451908.

The previous prime is 28464629. The next prime is 28464677. The reversal of 28464673 is 37646482.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28464673 - 2²¹ = 26367521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28464677) 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, 2065 + ... + 7822.

It is an arithmetic number, because the mean of its divisors is an integer number (7119360).

Almost surely, 2^28464673 is an apocalyptic number.

It is an amenable number.

28464673 is a deficient number, since it is larger than the sum of its proper divisors (12767).

28464673 is an equidigital number, since it uses as much as digits as its factorization.

28464673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12766.

The product of its digits is 193536, while the sum is 40.

The square root of 28464673 is about 5335.2294233707. The cubic root of 28464673 is about 305.3294764370.

The spelling of 28464673 in words is "twenty-eight million, four hundred sixty-four thousand, six hundred seventy-three".