722120700 has 144 divisors (see below), whose sum is σ = 2446343424. Its totient is φ = 161011200.

The previous prime is 722120689. The next prime is 722120701. The reversal of 722120700 is 7021227.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722120701) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81907 + ... + 90293.

It is an arithmetic number, because the mean of its divisors is an integer number (16988496).

Almost surely, 2^722120700 is an apocalyptic number.

722120700 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 722120700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223171712).

722120700 is an abundant number, since it is smaller than the sum of its proper divisors (1724222724).

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

722120700 is a wasteful number, since it uses less digits than its factorization.

722120700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8452 (or 8445 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 722120700 is about 26872.3035856623. The cubic root of 722120700 is about 897.1600603748.

Adding to 722120700 its reverse (7021227), we get a palindrome (729141927).

The spelling of 722120700 in words is "seven hundred twenty-two million, one hundred twenty thousand, seven hundred".