728825437 has 8 divisors (see below), whose sum is σ = 742053312. Its totient is φ = 715680000.

The previous prime is 728825429. The next prime is 728825459. The reversal of 728825437 is 734528827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 728825437 - 2³ = 728825429 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 (728825467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2628 + ... + 38269.

It is an arithmetic number, because the mean of its divisors is an integer number (92756664).

Almost surely, 2^728825437 is an apocalyptic number.

It is an amenable number.

728825437 is a deficient number, since it is larger than the sum of its proper divisors (13227875).

728825437 is a wasteful number, since it uses less digits than its factorization.

728825437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41219.

The product of its digits is 752640, while the sum is 46.

The square root of 728825437 is about 26996.7671583099. The cubic root of 728825437 is about 899.9281576398.

The spelling of 728825437 in words is "seven hundred twenty-eight million, eight hundred twenty-five thousand, four hundred thirty-seven".