101085980 has 12 divisors (see below), whose sum is σ = 212280600. Its totient is φ = 40434384.

The previous prime is 101085979. The next prime is 101086021. The reversal of 101085980 is 89580101.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

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, 2527130 + ... + 2527169.

It is an arithmetic number, because the mean of its divisors is an integer number (17690050).

Almost surely, 2^101085980 is an apocalyptic number.

101085980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101085980 is an abundant number, since it is smaller than the sum of its proper divisors (111194620).

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

101085980 is a wasteful number, since it uses less digits than its factorization.

101085980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5054308 (or 5054306 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 101085980 is about 10054.1523760086. The cubic root of 101085980 is about 465.8330617078.

The spelling of 101085980 in words is "one hundred one million, eighty-five thousand, nine hundred eighty".