100556772 has 12 divisors (see below), whose sum is σ = 234632496. Its totient is φ = 33518920.

The previous prime is 100556719. The next prime is 100556801. The reversal of 100556772 is 277655001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×100556772² = 20223328790119968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4189854 + ... + 4189877.

It is an arithmetic number, because the mean of its divisors is an integer number (19552708).

Almost surely, 2^100556772 is an apocalyptic number.

100556772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100556772 is an abundant number, since it is smaller than the sum of its proper divisors (134075724).

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

100556772 is a wasteful number, since it uses less digits than its factorization.

100556772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8379738 (or 8379736 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 100556772 is about 10027.7999581164. The cubic root of 100556772 is about 465.0187251102.

The spelling of 100556772 in words is "one hundred million, five hundred fifty-six thousand, seven hundred seventy-two".