728171153 has 2 divisors, whose sum is σ = 728171154. Its totient is φ = 728171152.

The previous prime is 728171123. The next prime is 728171177. The reversal of 728171153 is 351171827.

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., 456976129 + 271195024 = 21377^2 + 16468^2 .

It is a cyclic number.

It is not a de Polignac number, because 728171153 - 2¹² = 728167057 is a prime.

It is a super-2 number, since 2×728171153² = 1060466456122698818, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (728171123) 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, 364085576 + 364085577.

It is an arithmetic number, because the mean of its divisors is an integer number (364085577).

Almost surely, 2^728171153 is an apocalyptic number.

It is an amenable number.

728171153 is a deficient number, since it is larger than the sum of its proper divisors (1).

728171153 is an equidigital number, since it uses as much as digits as its factorization.

728171153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 35.

The square root of 728171153 is about 26984.6466161779. The cubic root of 728171153 is about 899.6587813491.

The spelling of 728171153 in words is "seven hundred twenty-eight million, one hundred seventy-one thousand, one hundred fifty-three".