728963871 has 8 divisors (see below), whose sum is σ = 979605504. Its totient is φ = 482149080.

The previous prime is 728963867. The next prime is 728963881. The reversal of 728963871 is 178369827.

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

It is not a de Polignac number, because 728963871 - 2² = 728963867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728963801) 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, 956265 + ... + 957026.

It is an arithmetic number, because the mean of its divisors is an integer number (122450688).

Almost surely, 2^728963871 is an apocalyptic number.

728963871 is a deficient number, since it is larger than the sum of its proper divisors (250641633).

728963871 is a wasteful number, since it uses less digits than its factorization.

728963871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913421.

The product of its digits is 1016064, while the sum is 51.

The square root of 728963871 is about 26999.3309361547. The cubic root of 728963871 is about 899.9851318531.

It can be divided in two parts, 72896 and 3871, that added together give a palindrome (76767).

The spelling of 728963871 in words is "seven hundred twenty-eight million, nine hundred sixty-three thousand, eight hundred seventy-one".