721026960 has 40 divisors (see below), whose sum is σ = 2235184320. Its totient is φ = 192273792.

The previous prime is 721026959. The next prime is 721026997. The reversal of 721026960 is 69620127.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501900 + ... + 1502379.

It is an arithmetic number, because the mean of its divisors is an integer number (55879608).

Almost surely, 2^721026960 is an apocalyptic number.

It is an amenable number.

721026960 is an abundant number, since it is smaller than the sum of its proper divisors (1514157360).

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

721026960 is a wasteful number, since it uses less digits than its factorization.

721026960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004295 (or 3004289 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 721026960 is about 26851.9451809361. The cubic root of 721026960 is about 896.7068786678.

The spelling of 721026960 in words is "seven hundred twenty-one million, twenty-six thousand, nine hundred sixty".