28884673 has 4 divisors (see below), whose sum is σ = 29149780. Its totient is φ = 28619568.

The previous prime is 28884671. The next prime is 28884697. The reversal of 28884673 is 37648882.

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 11512449 + 17372224 = 3393^2 + 4168^2 .

It is a cyclic number.

It is not a de Polignac number, because 28884673 - 2¹ = 28884671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28884671) 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, 132390 + ... + 132607.

It is an arithmetic number, because the mean of its divisors is an integer number (7287445).

Almost surely, 2^28884673 is an apocalyptic number.

It is an amenable number.

28884673 is a deficient number, since it is larger than the sum of its proper divisors (265107).

28884673 is a wasteful number, since it uses less digits than its factorization.

28884673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265106.

The product of its digits is 516096, while the sum is 46.

The square root of 28884673 is about 5374.4462970617. The cubic root of 28884673 is about 306.8238758902.

The spelling of 28884673 in words is "twenty-eight million, eight hundred eighty-four thousand, six hundred seventy-three".