728528183 has 4 divisors (see below), whose sum is σ = 771382800. Its totient is φ = 685673568.

The previous prime is 728528173. The next prime is 728528189. The reversal of 728528183 is 381825827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728528183 - 2⁸ = 728527927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728528189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21427283 + ... + 21427316.

It is an arithmetic number, because the mean of its divisors is an integer number (192845700).

Almost surely, 2^728528183 is an apocalyptic number.

728528183 is a deficient number, since it is larger than the sum of its proper divisors (42854617).

728528183 is a wasteful number, since it uses less digits than its factorization.

728528183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42854616.

The product of its digits is 215040, while the sum is 44.

The square root of 728528183 is about 26991.2612339624. The cubic root of 728528183 is about 899.8057947222.

The spelling of 728528183 in words is "seven hundred twenty-eight million, five hundred twenty-eight thousand, one hundred eighty-three".