10821938 has 8 divisors (see below), whose sum is σ = 16578432. Its totient is φ = 5295796.

The previous prime is 10821931. The next prime is 10821947. The reversal of 10821938 is 83912801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×10821938² = 234228684151688, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10821931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57470 + ... + 57657.

It is an arithmetic number, because the mean of its divisors is an integer number (2072304).

Almost surely, 2^10821938 is an apocalyptic number.

10821938 is a deficient number, since it is larger than the sum of its proper divisors (5756494).

10821938 is a wasteful number, since it uses less digits than its factorization.

10821938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115176.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 10821938 is about 3289.6714121626. The cubic root of 10821938 is about 221.1914558839.

The spelling of 10821938 in words is "ten million, eight hundred twenty-one thousand, nine hundred thirty-eight".