721728114 has 8 divisors (see below), whose sum is σ = 1443456240. Its totient is φ = 240576036.

The previous prime is 721728103. The next prime is 721728157. The reversal of 721728114 is 411827127.

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

721728114 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60144004 + ... + 60144015.

It is an arithmetic number, because the mean of its divisors is an integer number (180432030).

Almost surely, 2^721728114 is an apocalyptic number.

721728114 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

721728114 is a wasteful number, since it uses less digits than its factorization.

721728114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120288024.

The product of its digits is 6272, while the sum is 33.

The square root of 721728114 is about 26864.9979341149. The cubic root of 721728114 is about 896.9974484429.

The spelling of 721728114 in words is "seven hundred twenty-one million, seven hundred twenty-eight thousand, one hundred fourteen".