10865856 has 56 divisors (see below), whose sum is σ = 30449520. Its totient is φ = 3407872.

The previous prime is 10865851. The next prime is 10865857. The reversal of 10865856 is 65856801.

It is a super-2 number, since 2×10865856² = 236133653225472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10865851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1600 + ... + 4928.

Almost surely, 2^10865856 is an apocalyptic number.

10865856 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 10865856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15224760).

10865856 is an abundant number, since it is smaller than the sum of its proper divisors (19583664).

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

10865856 is a wasteful number, since it uses less digits than its factorization.

10865856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 10865856 is about 3296.3397883107. The cubic root of 10865856 is about 221.4902678880.

The spelling of 10865856 in words is "ten million, eight hundred sixty-five thousand, eight hundred fifty-six".