720517272 has 32 divisors (see below), whose sum is σ = 1845229680. Its totient is φ = 234314240.

The previous prime is 720517271. The next prime is 720517327. The reversal of 720517272 is 272715027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720517271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365133 + ... + 367100.

Almost surely, 2^720517272 is an apocalyptic number.

It is an amenable number.

720517272 is an abundant number, since it is smaller than the sum of its proper divisors (1124712408).

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

720517272 is a wasteful number, since it uses less digits than its factorization.

720517272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732283 (or 732279 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 720517272 is about 26842.4527940350. The cubic root of 720517272 is about 896.4955373006.

The spelling of 720517272 in words is "seven hundred twenty million, five hundred seventeen thousand, two hundred seventy-two".