704643128 has 48 divisors (see below), whose sum is σ = 1542091680. Its totient is φ = 300972672.

The previous prime is 704643127. The next prime is 704643169. The reversal of 704643128 is 821346407.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (704643127) 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, 119825 + ... + 125567.

It is an arithmetic number, because the mean of its divisors is an integer number (32126910).

Almost surely, 2^704643128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 704643128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771045840).

704643128 is an abundant number, since it is smaller than the sum of its proper divisors (837448552).

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

704643128 is a wasteful number, since it uses less digits than its factorization.

704643128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6076 (or 6065 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 704643128 is about 26545.1149554866. The cubic root of 704643128 is about 889.8628446642.

The spelling of 704643128 in words is "seven hundred four million, six hundred forty-three thousand, one hundred twenty-eight".