722001888 has 72 divisors (see below), whose sum is σ = 2056921776. Its totient is φ = 240230400.

The previous prime is 722001887. The next prime is 722002003. The reversal of 722001888 is 888100227.

722001888 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722001887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182653 + ... + 186563.

It is an arithmetic number, because the mean of its divisors is an integer number (28568358).

Almost surely, 2^722001888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722001888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1028460888).

722001888 is an abundant number, since it is smaller than the sum of its proper divisors (1334919888).

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

722001888 is a wasteful number, since it uses less digits than its factorization.

722001888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568 (or 4557 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 722001888 is about 26870.0928171080. The cubic root of 722001888 is about 897.1108538143.

It can be divided in two parts, 72200 and 1888, that added together give a cube (74088 = 42³).

The spelling of 722001888 in words is "seven hundred twenty-two million, one thousand, eight hundred eighty-eight".