706291728 has 40 divisors (see below), whose sum is σ = 1903919808. Its totient is φ = 225194112.

The previous prime is 706291681. The next prime is 706291777. The reversal of 706291728 is 827192607.

It is a super-4 number, since 4×706291728⁴ (a number of 36 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 706291728.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318775 + ... + 320982.

Almost surely, 2^706291728 is an apocalyptic number.

It is an amenable number.

706291728 is an abundant number, since it is smaller than the sum of its proper divisors (1197628080).

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

706291728 is a wasteful number, since it uses less digits than its factorization.

706291728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639791 (or 639785 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 706291728 is about 26576.1496082484. The cubic root of 706291728 is about 890.5562856485.

It can be divided in two parts, 7062 and 91728, that added together give a triangular number (98790 = T₄₄₄).

The spelling of 706291728 in words is "seven hundred six million, two hundred ninety-one thousand, seven hundred twenty-eight".