722219520 has 320 divisors, whose sum is σ = 2573835264. Its totient is φ = 171294720.

The previous prime is 722219497. The next prime is 722219557. The reversal of 722219520 is 25912227.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7011789 + ... + 7011891.

Almost surely, 2^722219520 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 722219520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1286917632).

722219520 is an abundant number, since it is smaller than the sum of its proper divisors (1851615744).

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

722219520 is a wasteful number, since it uses less digits than its factorization.

722219520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 722219520 is about 26874.1422188691. The cubic root of 722219520 is about 897.2009830411.

The spelling of 722219520 in words is "seven hundred twenty-two million, two hundred nineteen thousand, five hundred twenty".