728198737 has 8 divisors (see below), whose sum is σ = 832611456. Its totient is φ = 623882112.

The previous prime is 728198719. The next prime is 728198743. The reversal of 728198737 is 737891827.

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

It is not a de Polignac number, because 728198737 - 2²³ = 719810129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728198707) 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, 6973 + ... + 38794.

It is an arithmetic number, because the mean of its divisors is an integer number (104076432).

Almost surely, 2^728198737 is an apocalyptic number.

It is an amenable number.

728198737 is a deficient number, since it is larger than the sum of its proper divisors (104412719).

728198737 is a wasteful number, since it uses less digits than its factorization.

728198737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48047.

The product of its digits is 1185408, while the sum is 52.

The square root of 728198737 is about 26985.1577167894. The cubic root of 728198737 is about 899.6701412583.

The spelling of 728198737 in words is "seven hundred twenty-eight million, one hundred ninety-eight thousand, seven hundred thirty-seven".