722788 has 12 divisors (see below), whose sum is σ = 1379952. Its totient is φ = 328520.

The previous prime is 722783. The next prime is 722791. The reversal of 722788 is 887227.

722788 = T₃₅₇ + T₃₅₈ + ... + T₃₆₇.

It is not an unprimeable number, because it can be changed into a prime (722783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8170 + ... + 8257.

It is an arithmetic number, because the mean of its divisors is an integer number (114996).

2⁷²²⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

722788 is a deficient number, since it is larger than the sum of its proper divisors (657164).

722788 is a wasteful number, since it uses less digits than its factorization.

722788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16442 (or 16440 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 722788 is about 850.1693948855. The cubic root of 722788 is about 89.7436325637.

The spelling of 722788 in words is "seven hundred twenty-two thousand, seven hundred eighty-eight".