722534388 has 48 divisors (see below), whose sum is σ = 1701860160. Its totient is φ = 238579200.

The previous prime is 722534387. The next prime is 722534401. The reversal of 722534388 is 883435227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722534383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 661723 + ... + 662813.

It is an arithmetic number, because the mean of its divisors is an integer number (35455420).

Almost surely, 2^722534388 is an apocalyptic number.

It is an amenable number.

722534388 is an abundant number, since it is smaller than the sum of its proper divisors (979325772).

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

722534388 is a wasteful number, since it uses less digits than its factorization.

722534388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568 (or 1566 counting only the distinct ones).

The product of its digits is 322560, while the sum is 42.

The square root of 722534388 is about 26879.9997767857. Note that the first 3 decimals coincide. The cubic root of 722534388 is about 897.3313491450.

The spelling of 722534388 in words is "seven hundred twenty-two million, five hundred thirty-four thousand, three hundred eighty-eight".