705898728 has 48 divisors (see below), whose sum is σ = 1963486980. Its totient is φ = 228939264.

The previous prime is 705898723. The next prime is 705898729. The reversal of 705898728 is 827898507.

It can be written as a sum of positive squares in 2 ways, for example, as 704265444 + 1633284 = 26538^2 + 1278^2 .

It is not an unprimeable number, because it can be changed into a prime (705898723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129825 + ... + 135152.

Almost surely, 2^705898728 is an apocalyptic number.

It is an amenable number.

705898728 is an abundant number, since it is smaller than the sum of its proper divisors (1257588252).

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

705898728 is a wasteful number, since it uses less digits than its factorization.

705898728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265026 (or 265019 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 54.

The square root of 705898728 is about 26568.7547318274. The cubic root of 705898728 is about 890.3910783926.

The spelling of 705898728 in words is "seven hundred five million, eight hundred ninety-eight thousand, seven hundred twenty-eight".