728287547 has 8 divisors (see below), whose sum is σ = 784646016. Its totient is φ = 671977152.

The previous prime is 728287487. The next prime is 728287583. The reversal of 728287547 is 745782827.

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 728287547 - 2¹⁴ = 728271163 is a prime.

It is a super-2 number, since 2×728287547² = 1060805502230554418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 728287495 and 728287504.

It is not an unprimeable number, because it can be changed into a prime (728287597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23318 + ... + 44724.

It is an arithmetic number, because the mean of its divisors is an integer number (98080752).

Almost surely, 2^728287547 is an apocalyptic number.

728287547 is a deficient number, since it is larger than the sum of its proper divisors (56358469).

728287547 is a wasteful number, since it uses less digits than its factorization.

728287547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24037.

The product of its digits is 1756160, while the sum is 50.

The square root of 728287547 is about 26986.8032008239. The cubic root of 728287547 is about 899.7067139013.

The spelling of 728287547 in words is "seven hundred twenty-eight million, two hundred eighty-seven thousand, five hundred forty-seven".