728342547 has 8 divisors (see below), whose sum is σ = 971666880. Its totient is φ = 485289960.

The previous prime is 728342519. The next prime is 728342591. The reversal of 728342547 is 745243827.

It is a happy number.

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

It is not a de Polignac number, because 728342547 - 2¹¹ = 728340499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 728342499 and 728342508.

It is not an unprimeable number, because it can be changed into a prime (728342507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61597 + ... + 72462.

It is an arithmetic number, because the mean of its divisors is an integer number (121458360).

Almost surely, 2^728342547 is an apocalyptic number.

728342547 is a deficient number, since it is larger than the sum of its proper divisors (243324333).

728342547 is a wasteful number, since it uses less digits than its factorization.

728342547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135873.

The product of its digits is 376320, while the sum is 42.

The square root of 728342547 is about 26987.8221981693. The cubic root of 728342547 is about 899.7293618347.

The spelling of 728342547 in words is "seven hundred twenty-eight million, three hundred forty-two thousand, five hundred forty-seven".