707481728 has 24 divisors (see below), whose sum is σ = 1410036015. Its totient is φ = 353590400.

The previous prime is 707481727. The next prime is 707481779. The reversal of 707481728 is 827184707.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 353740864 + 353740864 = 18808^2 + 18808^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=18808.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (707481727) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 299753 + ... + 302103.

Almost surely, 2^707481728 is an apocalyptic number.

It is an amenable number.

707481728 is a deficient number, since it is larger than the sum of its proper divisors (702554287).

707481728 is an frugal number, since it uses more digits than its factorization.

707481728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4716 (or 2353 counting only the distinct ones).

The product of its (nonzero) digits is 175616, while the sum is 44.

The square root of 707481728 is about 26598.5286811132. The cubic root of 707481728 is about 891.0561581101.

The spelling of 707481728 in words is "seven hundred seven million, four hundred eighty-one thousand, seven hundred twenty-eight".