100722072 has 32 divisors (see below), whose sum is σ = 274697280. Its totient is φ = 30521760.

The previous prime is 100722071. The next prime is 100722107. The reversal of 100722072 is 270227001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100722071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190498 + ... + 191025.

It is an arithmetic number, because the mean of its divisors is an integer number (8584290).

Almost surely, 2^100722072 is an apocalyptic number.

100722072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100722072 is an abundant number, since it is smaller than the sum of its proper divisors (173975208).

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

100722072 is a wasteful number, since it uses less digits than its factorization.

100722072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381543 (or 381539 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 100722072 is about 10036.0386607466. The cubic root of 100722072 is about 465.2733922421.

Adding to 100722072 its reverse (270227001), we get a palindrome (370949073).

The spelling of 100722072 in words is "one hundred million, seven hundred twenty-two thousand, seventy-two".