728280422769 has 8 divisors (see below), whose sum is σ = 971065152000. Its totient is φ = 485507987696.

The previous prime is 728280422747. The next prime is 728280422777. The reversal of 728280422769 is 967224082827.

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

It is a cyclic number.

It is not a de Polignac number, because 728280422769 - 2⁷ = 728280422641 is a prime.

It is a super-2 number, since 2×728280422769² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728280422719) 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, 2934417 + ... + 3172910.

It is an arithmetic number, because the mean of its divisors is an integer number (121383144000).

Almost surely, 2^728280422769 is an apocalyptic number.

It is an amenable number.

728280422769 is a deficient number, since it is larger than the sum of its proper divisors (242784729231).

728280422769 is a wasteful number, since it uses less digits than its factorization.

728280422769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6147079.

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 728280422769 in words is "seven hundred twenty-eight billion, two hundred eighty million, four hundred twenty-two thousand, seven hundred sixty-nine".