28455673 has 4 divisors (see below), whose sum is σ = 29953360. Its totient is φ = 26957988.

The previous prime is 28455667. The next prime is 28455719. The reversal of 28455673 is 37655482.

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 a de Polignac number, because none of the positive numbers 2^k-28455673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28455643) 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, 748815 + ... + 748852.

It is an arithmetic number, because the mean of its divisors is an integer number (7488340).

Almost surely, 2^28455673 is an apocalyptic number.

It is an amenable number.

28455673 is a deficient number, since it is larger than the sum of its proper divisors (1497687).

28455673 is a wasteful number, since it uses less digits than its factorization.

28455673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497686.

The product of its digits is 201600, while the sum is 40.

The square root of 28455673 is about 5334.3859065501. The cubic root of 28455673 is about 305.2972932117.

The spelling of 28455673 in words is "twenty-eight million, four hundred fifty-five thousand, six hundred seventy-three".