728406267 has 16 divisors (see below), whose sum is σ = 980179200. Its totient is φ = 481140000.

The previous prime is 728406241. The next prime is 728406269. The reversal of 728406267 is 762604827.

It is not a de Polignac number, because 728406267 - 2⁷ = 728406139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728406269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147417 + ... + 152277.

It is an arithmetic number, because the mean of its divisors is an integer number (61261200).

Almost surely, 2^728406267 is an apocalyptic number.

728406267 is a deficient number, since it is larger than the sum of its proper divisors (251772933).

728406267 is a wasteful number, since it uses less digits than its factorization.

728406267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 728406267 is about 26989.0027048055. The cubic root of 728406267 is about 899.7555990694.

The spelling of 728406267 in words is "seven hundred twenty-eight million, four hundred six thousand, two hundred sixty-seven".