728101172 has 12 divisors (see below), whose sum is σ = 1276025856. Its totient is φ = 363522360.

The previous prime is 728101163. The next prime is 728101189. The reversal of 728101172 is 271101827.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128948 + ... + 134475.

It is an arithmetic number, because the mean of its divisors is an integer number (106335488).

Almost surely, 2^728101172 is an apocalyptic number.

It is an amenable number.

728101172 is a deficient number, since it is larger than the sum of its proper divisors (547924684).

728101172 is a wasteful number, since it uses less digits than its factorization.

728101172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264118 (or 264116 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 728101172 is about 26983.3499032274. The cubic root of 728101172 is about 899.6299598109.

Adding to 728101172 its reverse (271101827), we get a palindrome (999202999).

The spelling of 728101172 in words is "seven hundred twenty-eight million, one hundred one thousand, one hundred seventy-two".