720005388 has 48 divisors (see below), whose sum is σ = 1740372480. Its totient is φ = 231402304.

The previous prime is 720005381. The next prime is 720005389. The reversal of 720005388 is 883500027.

It is not an unprimeable number, because it can be changed into a prime (720005381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454045 + ... + 455627.

It is an arithmetic number, because the mean of its divisors is an integer number (36257760).

Almost surely, 2^720005388 is an apocalyptic number.

It is an amenable number.

720005388 is an abundant number, since it is smaller than the sum of its proper divisors (1020367092).

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

720005388 is a wasteful number, since it uses less digits than its factorization.

720005388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926 (or 2924 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 720005388 is about 26832.9161292618. The cubic root of 720005388 is about 896.2831850289.

The spelling of 720005388 in words is "seven hundred twenty million, five thousand, three hundred eighty-eight".