10643256 has 96 divisors (see below), whose sum is σ = 31646160. Its totient is φ = 3211776.

The previous prime is 10643251. The next prime is 10643257. The reversal of 10643256 is 65234601.

10643256 is a `hidden beast` number, since 10 + 643 + 2 + 5 + 6 = 666.

It is a super-2 number, since 2×10643256² = 226557796563072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643251) 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 in 23 ways as a sum of consecutive naturals, for example, 77620 + ... + 77756.

Almost surely, 2^10643256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10643256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15823080).

10643256 is an abundant number, since it is smaller than the sum of its proper divisors (21002904).

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

10643256 is a wasteful number, since it uses less digits than its factorization.

10643256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 10643256 is about 3262.4003433055. The cubic root of 10643256 is about 219.9673229703.

Adding to 10643256 its reverse (65234601), we get a palindrome (75877857).

The spelling of 10643256 in words is "ten million, six hundred forty-three thousand, two hundred fifty-six".