704240128 has 80 divisors (see below), whose sum is σ = 1488833280. Its totient is φ = 332107776.

The previous prime is 704240087. The next prime is 704240137. The reversal of 704240128 is 821042407.

It is a junction number, because it is equal to n+sod(n) for n = 704240096 and 704240105.

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, 929926 + ... + 930682.

It is an arithmetic number, because the mean of its divisors is an integer number (18610416).

Almost surely, 2^704240128 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 704240128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744416640).

704240128 is an abundant number, since it is smaller than the sum of its proper divisors (784593152).

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

704240128 is an equidigital number, since it uses as much as digits as its factorization.

704240128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 704240128 is about 26537.5230193023. The cubic root of 704240128 is about 889.6931686489.

The spelling of 704240128 in words is "seven hundred four million, two hundred forty thousand, one hundred twenty-eight".