728206101505 has 8 divisors (see below), whose sum is σ = 873851902272. Its totient is φ = 582561827568.

The previous prime is 728206101503. The next prime is 728206101517. The reversal of 728206101505 is 505101602827.

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 728206101505 - 2¹ = 728206101503 is a prime.

It is a super-2 number, since 2×728206101505² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728206101503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675972 + ... + 2065258.

It is an arithmetic number, because the mean of its divisors is an integer number (109231487784).

Almost surely, 2^728206101505 is an apocalyptic number.

It is an amenable number.

728206101505 is a deficient number, since it is larger than the sum of its proper divisors (145645800767).

728206101505 is a wasteful number, since it uses less digits than its factorization.

728206101505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763415.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 728206101505 in words is "seven hundred twenty-eight billion, two hundred six million, one hundred one thousand, five hundred five".