7428173 has 2 divisors, whose sum is σ = 7428174. Its totient is φ = 7428172.

The previous prime is 7428151. The next prime is 7428191. The reversal of 7428173 is 3718247.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6340324 + 1087849 = 2518^2 + 1043^2 .

It is a cyclic number.

It is not a de Polignac number, because 7428173 - 2¹⁰ = 7427149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7421173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3714086 + 3714087.

It is an arithmetic number, because the mean of its divisors is an integer number (3714087).

Almost surely, 2^7428173 is an apocalyptic number.

It is an amenable number.

7428173 is a deficient number, since it is larger than the sum of its proper divisors (1).

7428173 is an equidigital number, since it uses as much as digits as its factorization.

7428173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 32.

The square root of 7428173 is about 2725.4674828367. The cubic root of 7428173 is about 195.1165028119.

It can be divided in two parts, 74 and 28173, that multiplied together give a palindrome (2084802).

The spelling of 7428173 in words is "seven million, four hundred twenty-eight thousand, one hundred seventy-three".