704205138 has 32 divisors (see below), whose sum is σ = 1733429376. Its totient is φ = 185724288.

The previous prime is 704205121. The next prime is 704205143. The reversal of 704205138 is 831502407.

704205138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 644331 + ... + 645422.

It is an arithmetic number, because the mean of its divisors is an integer number (54169668).

Almost surely, 2^704205138 is an apocalyptic number.

704205138 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

704205138 is an abundant number, since it is smaller than the sum of its proper divisors (1029224238).

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

704205138 is a wasteful number, since it uses less digits than its factorization.

704205138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289778.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 704205138 is about 26536.8637559151. The cubic root of 704205138 is about 889.6784336751.

The spelling of 704205138 in words is "seven hundred four million, two hundred five thousand, one hundred thirty-eight".