101985280 has 44 divisors (see below), whose sum is σ = 244657440. Its totient is φ = 40792064.

The previous prime is 101985277. The next prime is 101985313. The reversal of 101985280 is 82589101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4840 + ... + 15079.

Almost surely, 2^101985280 is an apocalyptic number.

101985280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101985280 is an abundant number, since it is smaller than the sum of its proper divisors (142672160).

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

101985280 is an equidigital number, since it uses as much as digits as its factorization.

101985280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19944 (or 19926 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 101985280 is about 10098.7761634764. The cubic root of 101985280 is about 467.2103957154.

The spelling of 101985280 in words is "one hundred one million, nine hundred eighty-five thousand, two hundred eighty".