720772224 has 32 divisors (see below), whose sum is σ = 1914552240. Its totient is φ = 240257280.

The previous prime is 720772211. The next prime is 720772243. The reversal of 720772224 is 422277027.

It is a tau number, because it is divible by the number of its divisors (32).

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, 938122 + ... + 938889.

Almost surely, 2^720772224 is an apocalyptic number.

It is an amenable number.

720772224 is an abundant number, since it is smaller than the sum of its proper divisors (1193780016).

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

720772224 is a wasteful number, since it uses less digits than its factorization.

720772224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877028 (or 1877016 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 33.

The square root of 720772224 is about 26847.2014183974. The cubic root of 720772224 is about 896.6012652203.

The spelling of 720772224 in words is "seven hundred twenty million, seven hundred seventy-two thousand, two hundred twenty-four".