720381216 has 24 divisors (see below), whose sum is σ = 1891000944. Its totient is φ = 240127040.

The previous prime is 720381203. The next prime is 720381283. The reversal of 720381216 is 612183027.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3751890 + ... + 3752081.

It is an arithmetic number, because the mean of its divisors is an integer number (78791706).

Almost surely, 2^720381216 is an apocalyptic number.

It is an amenable number.

720381216 is an abundant number, since it is smaller than the sum of its proper divisors (1170619728).

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

720381216 is a wasteful number, since it uses less digits than its factorization.

720381216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7503984 (or 7503976 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 720381216 is about 26839.9183307252. The cubic root of 720381216 is about 896.4391050309.

The spelling of 720381216 in words is "seven hundred twenty million, three hundred eighty-one thousand, two hundred sixteen".