728474971 has 8 divisors (see below), whose sum is σ = 832706784. Its totient is φ = 624284160.

The previous prime is 728474969. The next prime is 728474977. The reversal of 728474971 is 179474827.

It is a happy number.

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 728474971 - 2¹ = 728474969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (728474977) 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, 59361 + ... + 70573.

It is an arithmetic number, because the mean of its divisors is an integer number (104088348).

Almost surely, 2^728474971 is an apocalyptic number.

728474971 is a deficient number, since it is larger than the sum of its proper divisors (104231813).

728474971 is a wasteful number, since it uses less digits than its factorization.

728474971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20501.

The product of its digits is 790272, while the sum is 49.

The square root of 728474971 is about 26990.2754895166. The cubic root of 728474971 is about 899.7838867929.

The spelling of 728474971 in words is "seven hundred twenty-eight million, four hundred seventy-four thousand, nine hundred seventy-one".