101115980 has 24 divisors (see below), whose sum is σ = 242678688. Its totient is φ = 34668288.

The previous prime is 101115947. The next prime is 101116021. The reversal of 101115980 is 89511101.

It is a super-2 number, since 2×101115980² = 20448882822720800, which contains 22 as substring.

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, 360989 + ... + 361268.

It is an arithmetic number, because the mean of its divisors is an integer number (10111612).

Almost surely, 2^101115980 is an apocalyptic number.

101115980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101115980 is an abundant number, since it is smaller than the sum of its proper divisors (141562708).

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

101115980 is a wasteful number, since it uses less digits than its factorization.

101115980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722273 (or 722271 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 101115980 is about 10055.6441862270. The cubic root of 101115980 is about 465.8791400053.

The spelling of 101115980 in words is "one hundred one million, one hundred fifteen thousand, nine hundred eighty".