728392007 has 12 divisors (see below), whose sum is σ = 867020616. Its totient is φ = 609814800.

The previous prime is 728391977. The next prime is 728392051. The reversal of 728392007 is 700293827.

728392007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 728392007 - 2¹⁸ = 728129863 is a prime.

It is a super-2 number, since 2×728392007² = 1061109831722976098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728392057) 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, 170744 + ... + 174957.

It is an arithmetic number, because the mean of its divisors is an integer number (72251718).

Almost surely, 2^728392007 is an apocalyptic number.

728392007 is a deficient number, since it is larger than the sum of its proper divisors (138628609).

728392007 is a wasteful number, since it uses less digits than its factorization.

728392007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345758 (or 345751 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 728392007 is about 26988.7385218354. The cubic root of 728392007 is about 899.7497275299.

The spelling of 728392007 in words is "seven hundred twenty-eight million, three hundred ninety-two thousand, seven".