728837237 has 4 divisors (see below), whose sum is σ = 729023136. Its totient is φ = 728651340.

The previous prime is 728837227. The next prime is 728837297. The reversal of 728837237 is 732738827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 728837237 - 2²⁰ = 727788661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728837191 and 728837200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728837227) 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, 86939 + ... + 94952.

It is an arithmetic number, because the mean of its divisors is an integer number (182255784).

Almost surely, 2^728837237 is an apocalyptic number.

It is an amenable number.

728837237 is a deficient number, since it is larger than the sum of its proper divisors (185899).

728837237 is a wasteful number, since it uses less digits than its factorization.

728837237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185898.

The product of its digits is 790272, while the sum is 47.

The square root of 728837237 is about 26996.9857021113. The cubic root of 728837237 is about 899.9330143560.

The spelling of 728837237 in words is "seven hundred twenty-eight million, eight hundred thirty-seven thousand, two hundred thirty-seven".