728014018 has 8 divisors (see below), whose sum is σ = 1156257612. Its totient is φ = 342594816.

The previous prime is 728013997. The next prime is 728014019. The reversal of 728014018 is 810410827.

It can be written as a sum of positive squares in 2 ways, for example, as 719151489 + 8862529 = 26817^2 + 2977^2 .

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

It is not an unprimeable number, because it can be changed into a prime (728014019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10706055 + ... + 10706122.

Almost surely, 2^728014018 is an apocalyptic number.

728014018 is a deficient number, since it is larger than the sum of its proper divisors (428243594).

728014018 is a wasteful number, since it uses less digits than its factorization.

728014018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21412196.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 728014018 is about 26981.7348960366. The cubic root of 728014018 is about 899.5940630238.

The spelling of 728014018 in words is "seven hundred twenty-eight million, fourteen thousand, eighteen".