722885520 has 80 divisors (see below), whose sum is σ = 2561086080. Its totient is φ = 165230592.

The previous prime is 722885519. The next prime is 722885549. The reversal of 722885520 is 25588227.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213465 + ... + 216824.

It is an arithmetic number, because the mean of its divisors is an integer number (32013576).

Almost surely, 2^722885520 is an apocalyptic number.

722885520 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

722885520 is an abundant number, since it is smaller than the sum of its proper divisors (1838200560).

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

722885520 is a wasteful number, since it uses less digits than its factorization.

722885520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430312 (or 430306 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 722885520 is about 26886.5304567175. The cubic root of 722885520 is about 897.4766851225.

The spelling of 722885520 in words is "seven hundred twenty-two million, eight hundred eighty-five thousand, five hundred twenty".