728667207 has 12 divisors (see below), whose sum is σ = 1076997064. Its totient is φ = 474480720.

The previous prime is 728667197. The next prime is 728667223. The reversal of 728667207 is 702766827.

It is a happy number.

It is not a de Polignac number, because 728667207 - 2¹¹ = 728665159 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 (728667257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 941044 + ... + 941817.

Almost surely, 2^728667207 is an apocalyptic number.

728667207 is a deficient number, since it is larger than the sum of its proper divisors (348329857).

728667207 is a wasteful number, since it uses less digits than its factorization.

728667207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882910 (or 1882907 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 728667207 is about 26993.8364631632. The cubic root of 728667207 is about 899.8630273031.

The spelling of 728667207 in words is "seven hundred twenty-eight million, six hundred sixty-seven thousand, two hundred seven".