10821728 has 24 divisors (see below), whose sum is σ = 21994560. Its totient is φ = 5235840.

The previous prime is 10821719. The next prime is 10821757. The reversal of 10821728 is 82712801.

It is a self number, because there is not a number n which added to its sum of digits gives 10821728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4463 + ... + 6446.

It is an arithmetic number, because the mean of its divisors is an integer number (916440).

Almost surely, 2^10821728 is an apocalyptic number.

It is an amenable number.

10821728 is an abundant number, since it is smaller than the sum of its proper divisors (11172832).

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

10821728 is a wasteful number, since it uses less digits than its factorization.

10821728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10950 (or 10942 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 10821728 is about 3289.6394939263. The cubic root of 10821728 is about 221.1900251326.

The spelling of 10821728 in words is "ten million, eight hundred twenty-one thousand, seven hundred twenty-eight".