8921056 has 72 divisors (see below), whose sum is σ = 20067264. Its totient is φ = 3886080.

The previous prime is 8921053. The next prime is 8921063. The reversal of 8921056 is 6501298.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287761 + ... + 287791.

It is an arithmetic number, because the mean of its divisors is an integer number (278712).

Almost surely, 2^8921056 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 8921056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10033632).

8921056 is an abundant number, since it is smaller than the sum of its proper divisors (11146208).

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

8921056 is a wasteful number, since it uses less digits than its factorization.

8921056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 8921056 is about 2986.8136868576. The cubic root of 8921056 is about 207.3984096500.

The spelling of 8921056 in words is "eight million, nine hundred twenty-one thousand, fifty-six".