720705272 has 32 divisors (see below), whose sum is σ = 1547773920. Its totient is φ = 308192640.

The previous prime is 720705221. The next prime is 720705281. The reversal of 720705272 is 272507027.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11858 + ... + 39774.

It is an arithmetic number, because the mean of its divisors is an integer number (48367935).

Almost surely, 2^720705272 is an apocalyptic number.

It is an amenable number.

720705272 is an abundant number, since it is smaller than the sum of its proper divisors (827068648).

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

720705272 is a wasteful number, since it uses less digits than its factorization.

720705272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28391 (or 28387 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 720705272 is about 26845.9544810759. The cubic root of 720705272 is about 896.5735028173.

The spelling of 720705272 in words is "seven hundred twenty million, seven hundred five thousand, two hundred seventy-two".