1105638 has 8 divisors (see below), whose sum is σ = 2211288. Its totient is φ = 368544.

The previous prime is 1105627. The next prime is 1105639. The reversal of 1105638 is 8365011.

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

1105638 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105639) 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, 92131 + ... + 92142.

It is an arithmetic number, because the mean of its divisors is an integer number (276411).

2^1105638 is an apocalyptic number.

1105638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1105638 is a wasteful number, since it uses less digits than its factorization.

1105638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184278.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1105638 is about 1051.4932239439. The cubic root of 1105638 is about 103.4040745800.

The spelling of 1105638 in words is "one million, one hundred five thousand, six hundred thirty-eight".