10933821 has 18 divisors (see below), whose sum is σ = 16111550. Its totient is φ = 7145136.

The previous prime is 10933817. The next prime is 10933831. The reversal of 10933821 is 12833901.

It can be written as a sum of positive squares in only one way, i.e., 10150596 + 783225 = 3186^2 + 885^2 .

It is not a de Polignac number, because 10933821 - 2² = 10933817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10933801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31155 + ... + 31503.

Almost surely, 2^10933821 is an apocalyptic number.

It is an amenable number.

10933821 is a deficient number, since it is larger than the sum of its proper divisors (5177729).

10933821 is an equidigital number, since it uses as much as digits as its factorization.

10933821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 10933821 is about 3306.6328795317. The cubic root of 10933821 is about 221.9511092726.

It can be divided in two parts, 109 and 33821, that added together give a triangular number (33930 = T₂₆₀).

The spelling of 10933821 in words is "ten million, nine hundred thirty-three thousand, eight hundred twenty-one".