1005894 has 48 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 309120.

The previous prime is 1005883. The next prime is 1005911. The reversal of 1005894 is 4985001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21379 + ... + 21425.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

2^1005894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1005894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179360).

1005894 is an abundant number, since it is smaller than the sum of its proper divisors (1352826).

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

1005894 is a wasteful number, since it uses less digits than its factorization.

1005894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1005894 is about 1002.9426703456. The cubic root of 1005894 is about 100.1960819341.

It can be divided in two parts, 1005 and 894, that multiplied together give a triangular number (898470 = T₁₃₄₀).

The spelling of 1005894 in words is "one million, five thousand, eight hundred ninety-four".