21883433 has 16 divisors (see below), whose sum is σ = 25872000. Its totient is φ = 18247680.

The previous prime is 21883423. The next prime is 21883439. The reversal of 21883433 is 33438812.

It is a happy number.

It is not a de Polignac number, because 21883433 - 2¹² = 21879337 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21883433.

It is not an unprimeable number, because it can be changed into a prime (21883439) by changing a digit.

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, 28073 + ... + 28841.

It is an arithmetic number, because the mean of its divisors is an integer number (1617000).

Almost surely, 2^21883433 is an apocalyptic number.

It is an amenable number.

21883433 is a deficient number, since it is larger than the sum of its proper divisors (3988567).

21883433 is a wasteful number, since it uses less digits than its factorization.

21883433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992.

The product of its digits is 13824, while the sum is 32.

The square root of 21883433 is about 4677.9731722189. The cubic root of 21883433 is about 279.7081695844.

The spelling of 21883433 in words is "twenty-one million, eight hundred eighty-three thousand, four hundred thirty-three".