728051569 has 8 divisors (see below), whose sum is σ = 832265280. Its totient is φ = 623889456.

The previous prime is 728051567. The next prime is 728051579. The reversal of 728051569 is 965150827.

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 728051569 - 2¹ = 728051567 is a prime.

It is a super-2 number, since 2×728051569² = 1060118174246723522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728051567) 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, 24627 + ... + 45415.

It is an arithmetic number, because the mean of its divisors is an integer number (104033160).

Almost surely, 2^728051569 is an apocalyptic number.

It is an amenable number.

728051569 is a deficient number, since it is larger than the sum of its proper divisors (104213711).

728051569 is a wasteful number, since it uses less digits than its factorization.

728051569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25799.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 728051569 is about 26982.4307466914. The cubic root of 728051569 is about 899.6095297937.

The spelling of 728051569 in words is "seven hundred twenty-eight million, fifty-one thousand, five hundred sixty-nine".