1087856 has 40 divisors (see below), whose sum is σ = 2630784. Its totient is φ = 423360.

The previous prime is 1087843. The next prime is 1087861. The reversal of 1087856 is 6587801.

It is a happy number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791 + ... + 1673.

2^1087856 is an apocalyptic number.

1087856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1087856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1315392).

1087856 is an abundant number, since it is smaller than the sum of its proper divisors (1542928).

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

1087856 is a wasteful number, since it uses less digits than its factorization.

1087856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1087856 is about 1043.0033556993. The cubic root of 1087856 is about 102.8467258704.

Subtracting 1087856 from its reverse (6587801), we obtain a palindrome (5499945).

The spelling of 1087856 in words is "one million, eighty-seven thousand, eight hundred fifty-six".