105581868 has 144 divisors (see below), whose sum is σ = 308577024. Its totient is φ = 27941760.

The previous prime is 105581867. The next prime is 105581941. The reversal of 105581868 is 868185501.

It is a happy number.

It is a super-2 number, since 2×105581868² = 22295061700738848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (105581867) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 500283 + ... + 500493.

It is an arithmetic number, because the mean of its divisors is an integer number (2142896).

Almost surely, 2^105581868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105581868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154288512).

105581868 is an abundant number, since it is smaller than the sum of its proper divisors (202995156).

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

105581868 is a wasteful number, since it uses less digits than its factorization.

105581868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 42.

The square root of 105581868 is about 10275.3037911295. The cubic root of 105581868 is about 472.6392456544.

The spelling of 105581868 in words is "one hundred five million, five hundred eighty-one thousand, eight hundred sixty-eight".