100809560 has 32 divisors (see below), whose sum is σ = 228839040. Its totient is φ = 39965184.

The previous prime is 100809557. The next prime is 100809601. The reversal of 100809560 is 65908001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6632 + ... + 15671.

It is an arithmetic number, because the mean of its divisors is an integer number (7151220).

Almost surely, 2^100809560 is an apocalyptic number.

100809560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100809560 is an abundant number, since it is smaller than the sum of its proper divisors (128029480).

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

100809560 is a wasteful number, since it uses less digits than its factorization.

100809560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22427 (or 22423 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 100809560 is about 10040.3964065170. The cubic root of 100809560 is about 465.4080666572.

The spelling of 100809560 in words is "one hundred million, eight hundred nine thousand, five hundred sixty".