100722080 has 24 divisors (see below), whose sum is σ = 237956292. Its totient is φ = 40288768.

The previous prime is 100722071. The next prime is 100722107. The reversal of 100722080 is 80227001.

It can be written as a sum of positive squares in 2 ways, for example, as 100721296 + 784 = 10036^2 + 28^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314597 + ... + 314916.

Almost surely, 2^100722080 is an apocalyptic number.

100722080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100722080 is an abundant number, since it is smaller than the sum of its proper divisors (137234212).

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

100722080 is an equidigital number, since it uses as much as digits as its factorization.

100722080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629528 (or 629520 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 100722080 is about 10036.0390593102. The cubic root of 100722080 is about 465.2734045604.

Adding to 100722080 its reverse (80227001), we get a palindrome (180949081).

The spelling of 100722080 in words is "one hundred million, seven hundred twenty-two thousand, eighty".