105723906 has 16 divisors (see below), whose sum is σ = 213996384. Its totient is φ = 34816544.

The previous prime is 105723887. The next prime is 105723907. The reversal of 105723906 is 609327501.

It is a super-2 number, since 2×105723906² = 22355088599793672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105723907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105651 + ... + 106646.

It is an arithmetic number, because the mean of its divisors is an integer number (13374774).

Almost surely, 2^105723906 is an apocalyptic number.

105723906 is an abundant number, since it is smaller than the sum of its proper divisors (108272478).

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

105723906 is a wasteful number, since it uses less digits than its factorization.

105723906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212385.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 105723906 is about 10282.2130886303. The cubic root of 105723906 is about 472.8510959548.

The spelling of 105723906 in words is "one hundred five million, seven hundred twenty-three thousand, nine hundred six".