706543728 has 80 divisors (see below), whose sum is σ = 2095996800. Its totient is φ = 202832640.

The previous prime is 706543699. The next prime is 706543741. The reversal of 706543728 is 827345607.

It is a super-2 number, since 2×706543728² = 998408079152275968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 706543728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25183 + ... + 45246.

It is an arithmetic number, because the mean of its divisors is an integer number (26199960).

Almost surely, 2^706543728 is an apocalyptic number.

It is an amenable number.

706543728 is an abundant number, since it is smaller than the sum of its proper divisors (1389453072).

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

706543728 is a wasteful number, since it uses less digits than its factorization.

706543728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70470 (or 70464 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 706543728 is about 26580.8902785441. The cubic root of 706543728 is about 890.6621878273.

The spelling of 706543728 in words is "seven hundred six million, five hundred forty-three thousand, seven hundred twenty-eight".