721871282 has 8 divisors (see below), whose sum is σ = 1181243952. Its totient is φ = 328123300.

The previous prime is 721871279. The next prime is 721871287. The reversal of 721871282 is 282178127.

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 (721871287) 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, 16406144 + ... + 16406187.

It is an arithmetic number, because the mean of its divisors is an integer number (147655494).

Almost surely, 2^721871282 is an apocalyptic number.

721871282 is a deficient number, since it is larger than the sum of its proper divisors (459372670).

721871282 is a wasteful number, since it uses less digits than its factorization.

721871282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32812344.

The product of its digits is 25088, while the sum is 38.

The square root of 721871282 is about 26867.6623843609. The cubic root of 721871282 is about 897.0567564831.

The spelling of 721871282 in words is "seven hundred twenty-one million, eight hundred seventy-one thousand, two hundred eighty-two".