28450673 has 4 divisors (see below), whose sum is σ = 30124260. Its totient is φ = 26777088.

The previous prime is 28450663. The next prime is 28450699. The reversal of 28450673 is 37605482.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22771984 + 5678689 = 4772^2 + 2383^2 .

It is a cyclic number.

It is not a de Polignac number, because 28450673 - 2¹⁰ = 28449649 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 (28450603) 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, 836768 + ... + 836801.

It is an arithmetic number, because the mean of its divisors is an integer number (7531065).

Almost surely, 2^28450673 is an apocalyptic number.

It is an amenable number.

28450673 is a deficient number, since it is larger than the sum of its proper divisors (1673587).

28450673 is a wasteful number, since it uses less digits than its factorization.

28450673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673586.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28450673 is about 5333.9172284541. The cubic root of 28450673 is about 305.2794107097.

The spelling of 28450673 in words is "twenty-eight million, four hundred fifty thousand, six hundred seventy-three".