722028205500 has 768 divisors, whose sum is σ = 2600252928000. Its totient is φ = 155186841600.

The previous prime is 722028205469. The next prime is 722028205523. The reversal of 722028205500 is 5502820227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2277691342 + ... + 2277691658.

It is an arithmetic number, because the mean of its divisors is an integer number (3385746000).

Almost surely, 2^722028205500 is an apocalyptic number.

722028205500 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722028205500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300126464000).

722028205500 is an abundant number, since it is smaller than the sum of its proper divisors (1878224722500).

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

722028205500 is a wasteful number, since it uses less digits than its factorization.

722028205500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 586 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The spelling of 722028205500 in words is "seven hundred twenty-two billion, twenty-eight million, two hundred five thousand, five hundred".