728237 has 4 divisors (see below), whose sum is σ = 740640. Its totient is φ = 715836.

The previous prime is 728209. The next prime is 728261. The reversal of 728237 is 732827.

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 728237 - 2⁶ = 728173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728237.

It is not an unprimeable number, because it can be changed into a prime (728207) 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 in 3 ways as a sum of consecutive naturals, for example, 6113 + ... + 6230.

It is an arithmetic number, because the mean of its divisors is an integer number (185160).

2⁷²⁸²³⁷ is an apocalyptic number.

It is an amenable number.

728237 is a deficient number, since it is larger than the sum of its proper divisors (12403).

728237 is a wasteful number, since it uses less digits than its factorization.

728237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12402.

The product of its digits is 4704, while the sum is 29.

The square root of 728237 is about 853.3680331487. The cubic root of 728237 is about 89.9685898621.

The spelling of 728237 in words is "seven hundred twenty-eight thousand, two hundred thirty-seven".