722804138 has 16 divisors (see below), whose sum is σ = 1242552960. Its totient is φ = 308908176.

The previous prime is 722804087. The next prime is 722804143. The reversal of 722804138 is 831408227.

722804138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 722804098 and 722804107.

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, 66881 + ... + 76932.

It is an arithmetic number, because the mean of its divisors is an integer number (77659560).

Almost surely, 2^722804138 is an apocalyptic number.

722804138 is a deficient number, since it is larger than the sum of its proper divisors (519748822).

722804138 is a wasteful number, since it uses less digits than its factorization.

722804138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144181.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 722804138 is about 26885.0169797231. The cubic root of 722804138 is about 897.4430047372.

The spelling of 722804138 in words is "seven hundred twenty-two million, eight hundred four thousand, one hundred thirty-eight".