722228080 has 80 divisors (see below), whose sum is σ = 1981016064. Its totient is φ = 239627520.

The previous prime is 722228071. The next prime is 722228081. The reversal of 722228080 is 80822227.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×722228080² = 1043226799080972800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722228081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3442 + ... + 38161.

Almost surely, 2^722228080 is an apocalyptic number.

722228080 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 722228080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990508032).

722228080 is an abundant number, since it is smaller than the sum of its proper divisors (1258787984).

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

722228080 is a wasteful number, since it uses less digits than its factorization.

722228080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41654 (or 41648 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 722228080 is about 26874.3014792943. The cubic root of 722228080 is about 897.2045276744.

The spelling of 722228080 in words is "seven hundred twenty-two million, two hundred twenty-eight thousand, eighty".