28384673 has 2 divisors, whose sum is σ = 28384674. Its totient is φ = 28384672.

The previous prime is 28384667. The next prime is 28384693. The reversal of 28384673 is 37648382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28376929 + 7744 = 5327^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 28384673 - 2¹² = 28380577 is a prime.

It is a super-2 number, since 2×28384673² = 1611379322633858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28384673.

It is not a weakly prime, because it can be changed into another prime (28384633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14192336 + 14192337.

It is an arithmetic number, because the mean of its divisors is an integer number (14192337).

Almost surely, 2^28384673 is an apocalyptic number.

It is an amenable number.

28384673 is a deficient number, since it is larger than the sum of its proper divisors (1).

28384673 is an equidigital number, since it uses as much as digits as its factorization.

28384673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 41.

The square root of 28384673 is about 5327.7268135669. The cubic root of 28384673 is about 305.0431650813.

The spelling of 28384673 in words is "twenty-eight million, three hundred eighty-four thousand, six hundred seventy-three".