10621056 has 64 divisors (see below), whose sum is σ = 29890080. Its totient is φ = 3330048.

The previous prime is 10621049. The next prime is 10621063. The reversal of 10621056 is 65012601.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10621049) and next prime (10621063).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×10621056² = 225613661110272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5715 + ... + 7341.

Almost surely, 2^10621056 is an apocalyptic number.

10621056 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 10621056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14945040).

10621056 is an abundant number, since it is smaller than the sum of its proper divisors (19269024).

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

10621056 is a wasteful number, since it uses less digits than its factorization.

10621056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 10621056 is about 3258.9961644654. The cubic root of 10621056 is about 219.8142785219.

Adding to 10621056 its reverse (65012601), we get a palindrome (75633657).

The spelling of 10621056 in words is "ten million, six hundred twenty-one thousand, fifty-six".