1005838 has 4 divisors (see below), whose sum is σ = 1508760. Its totient is φ = 502918.

The previous prime is 1005833. The next prime is 1005883. The reversal of 1005838 is 8385001.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005833) by changing a digit.

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 as a sum of consecutive naturals, namely, 251458 + ... + 251461.

It is an arithmetic number, because the mean of its divisors is an integer number (377190).

2^1005838 is an apocalyptic number.

1005838 is a deficient number, since it is larger than the sum of its proper divisors (502922).

1005838 is an equidigital number, since it uses as much as digits as its factorization.

1005838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502921.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1005838 is about 1002.9147521101. The cubic root of 1005838 is about 100.1942225319.

The spelling of 1005838 in words is "one million, five thousand, eight hundred thirty-eight".