28926173 has 2 divisors, whose sum is σ = 28926174. Its totient is φ = 28926172.

The previous prime is 28926077. The next prime is 28926187. The reversal of 28926173 is 37162982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22686169 + 6240004 = 4763^2 + 2498^2 .

It is a cyclic number.

It is not a de Polignac number, because 28926173 - 2⁸ = 28925917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28920173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14463086 + 14463087.

It is an arithmetic number, because the mean of its divisors is an integer number (14463087).

Almost surely, 2^28926173 is an apocalyptic number.

It is an amenable number.

28926173 is a deficient number, since it is larger than the sum of its proper divisors (1).

28926173 is an equidigital number, since it uses as much as digits as its factorization.

28926173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 28926173 is about 5378.3057741263. The cubic root of 28926173 is about 306.9707484499.

It can be divided in two parts, 289 and 26173, that added together give a palindrome (26462).

The spelling of 28926173 in words is "twenty-eight million, nine hundred twenty-six thousand, one hundred seventy-three".