728362471 has 4 divisors (see below), whose sum is σ = 728525512. Its totient is φ = 728199432.

The previous prime is 728362451. The next prime is 728362483. The reversal of 728362471 is 174263827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174263827 = 47 ⋅3707741.

It is a cyclic number.

It is not a de Polignac number, because 728362471 - 2⁷ = 728362343 is a prime.

It is a super-3 number, since 3×728362471³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728362451) 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, 74625 + ... + 83818.

It is an arithmetic number, because the mean of its divisors is an integer number (182131378).

Almost surely, 2^728362471 is an apocalyptic number.

728362471 is a deficient number, since it is larger than the sum of its proper divisors (163041).

728362471 is a wasteful number, since it uses less digits than its factorization.

728362471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163040.

The product of its digits is 112896, while the sum is 40.

The square root of 728362471 is about 26988.1913250962. The cubic root of 728362471 is about 899.7375658702.

The spelling of 728362471 in words is "seven hundred twenty-eight million, three hundred sixty-two thousand, four hundred seventy-one".