10921956 has 48 divisors (see below), whose sum is σ = 27732096. Its totient is φ = 3331584.

The previous prime is 10921931. The next prime is 10921961. The reversal of 10921956 is 65912901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6825 + ... + 8271.

It is an arithmetic number, because the mean of its divisors is an integer number (577752).

Almost surely, 2^10921956 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 10921956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13866048).

10921956 is an abundant number, since it is smaller than the sum of its proper divisors (16810140).

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

10921956 is a wasteful number, since it uses less digits than its factorization.

10921956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 10921956 is about 3304.8382713833. The cubic root of 10921956 is about 221.8707956884.

The spelling of 10921956 in words is "ten million, nine hundred twenty-one thousand, nine hundred fifty-six".