1071856 has 20 divisors (see below), whose sum is σ = 2144704. Its totient is φ = 518400.

The previous prime is 1071841. The next prime is 1071857. The reversal of 1071856 is 6581701.

It is a happy number.

1071856 is an admirable number.

It is a super-2 number, since 2×1071856² = 2297750569472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1071857) 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, 585 + ... + 1576.

2^1071856 is an apocalyptic number.

1071856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1071856 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.

1071856 is a wasteful number, since it uses less digits than its factorization.

1071856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200 (or 2194 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1071856 is about 1035.3047860413. The cubic root of 1071856 is about 102.3400161391.

The spelling of 1071856 in words is "one million, seventy-one thousand, eight hundred fifty-six".