101605280 has 96 divisors (see below), whose sum is σ = 277893504. Its totient is φ = 34384896.

The previous prime is 101605271. The next prime is 101605289. The reversal of 101605280 is 82506101.

It is an interprime number because it is at equal distance from previous prime (101605271) and next prime (101605289).

It is not an unprimeable number, because it can be changed into a prime (101605289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92414 + ... + 93506.

It is an arithmetic number, because the mean of its divisors is an integer number (2894724).

Almost surely, 2^101605280 is an apocalyptic number.

101605280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101605280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138946752).

101605280 is an abundant number, since it is smaller than the sum of its proper divisors (176288224).

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

101605280 is a wasteful number, since it uses less digits than its factorization.

101605280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1190 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 101605280 is about 10079.9444442913. The cubic root of 101605280 is about 466.6293938485.

The spelling of 101605280 in words is "one hundred one million, six hundred five thousand, two hundred eighty".