728812937 has 4 divisors (see below), whose sum is σ = 760500480. Its totient is φ = 697125396.

The previous prime is 728812919. The next prime is 728812943. The reversal of 728812937 is 739218827.

728812937 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 728812937 - 2²² = 724618633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728812891 and 728812900.

It is not an unprimeable number, because it can be changed into a prime (728812907) 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, 15843737 + ... + 15843782.

It is an arithmetic number, because the mean of its divisors is an integer number (190125120).

Almost surely, 2^728812937 is an apocalyptic number.

It is an amenable number.

728812937 is a deficient number, since it is larger than the sum of its proper divisors (31687543).

728812937 is a wasteful number, since it uses less digits than its factorization.

728812937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31687542.

The product of its digits is 338688, while the sum is 47.

The square root of 728812937 is about 26996.5356481160. The cubic root of 728812937 is about 899.9230127562.

The spelling of 728812937 in words is "seven hundred twenty-eight million, eight hundred twelve thousand, nine hundred thirty-seven".