1048905 has 48 divisors (see below), whose sum is σ = 2149056. Its totient is φ = 466560.

The previous prime is 1048897. The next prime is 1048909. The reversal of 1048905 is 5098401.

It is not a de Polignac number, because 1048905 - 2³ = 1048897 is a prime.

It is a super-2 number, since 2×1048905² = 2200403398050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1048909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6354 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (44772).

2^1048905 is an apocalyptic number.

1048905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1048905 is an abundant number, since it is smaller than the sum of its proper divisors (1100151).

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

1048905 is a wasteful number, since it uses less digits than its factorization.

1048905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 195 counting only the distinct ones).

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

The square root of 1048905 is about 1024.1606319323. The cubic root of 1048905 is about 101.6042915190.

It can be divided in two parts, 1048 and 905, that added together give a triangular number (1953 = T₆₂).

The spelling of 1048905 in words is "one million, forty-eight thousand, nine hundred five".