105685438 has 8 divisors (see below), whose sum is σ = 158772888. Its totient is φ = 52761144.

The previous prime is 105685423. The next prime is 105685439. The reversal of 105685438 is 834586501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×105685438² = 22338823610503688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105685438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105685439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39156 + ... + 41767.

It is an arithmetic number, because the mean of its divisors is an integer number (19846611).

Almost surely, 2^105685438 is an apocalyptic number.

105685438 is a deficient number, since it is larger than the sum of its proper divisors (53087450).

105685438 is an equidigital number, since it uses as much as digits as its factorization.

105685438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81578.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 105685438 is about 10280.3423094759. The cubic root of 105685438 is about 472.7937395088.

The spelling of 105685438 in words is "one hundred five million, six hundred eighty-five thousand, four hundred thirty-eight".