722419280 has 80 divisors (see below), whose sum is σ = 1836632448. Its totient is φ = 262080000.

The previous prime is 722419241. The next prime is 722419289. The reversal of 722419280 is 82914227.

722419280 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 (80).

It is a super-2 number, since 2×722419280² = 1043779232231436800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 722419280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722419289) 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, 554630 + ... + 555930.

Almost surely, 2^722419280 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 722419280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918316224).

722419280 is an abundant number, since it is smaller than the sum of its proper divisors (1114213168).

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

722419280 is a wasteful number, since it uses less digits than its factorization.

722419280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 722419280 is about 26877.8585456505. The cubic root of 722419280 is about 897.2836948953.

The spelling of 722419280 in words is "seven hundred twenty-two million, four hundred nineteen thousand, two hundred eighty".