28037173 has 2 divisors, whose sum is σ = 28037174. Its totient is φ = 28037172.

The previous prime is 28037167. The next prime is 28037189. The reversal of 28037173 is 37173082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25020004 + 3017169 = 5002^2 + 1737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28037173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28037143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14018586 + 14018587.

It is an arithmetic number, because the mean of its divisors is an integer number (14018587).

Almost surely, 2^28037173 is an apocalyptic number.

It is an amenable number.

28037173 is a deficient number, since it is larger than the sum of its proper divisors (1).

28037173 is an equidigital number, since it uses as much as digits as its factorization.

28037173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 28037173 is about 5295.0139754301. The cubic root of 28037173 is about 303.7932176704.

It can be divided in two parts, 2803717 and 3, that multiplied together give a triangular number (8411151 = T₄₁₀₁).

The spelling of 28037173 in words is "twenty-eight million, thirty-seven thousand, one hundred seventy-three".