105218994 has 32 divisors (see below), whose sum is σ = 217681920. Its totient is φ = 33885072.

The previous prime is 105218987. The next prime is 105218999. The reversal of 105218994 is 499812501.

It is a super-2 number, since 2×105218994² = 22142073396744072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105218999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19917 + ... + 24639.

It is an arithmetic number, because the mean of its divisors is an integer number (6802560).

Almost surely, 2^105218994 is an apocalyptic number.

105218994 is an abundant number, since it is smaller than the sum of its proper divisors (112462926).

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

105218994 is a wasteful number, since it uses less digits than its factorization.

105218994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4854.

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 105218994 is about 10257.6310130556. The cubic root of 105218994 is about 472.0971533470.

The spelling of 105218994 in words is "one hundred five million, two hundred eighteen thousand, nine hundred ninety-four".