21433422 has 32 divisors (see below), whose sum is σ = 43803648. Its totient is φ = 6990336.

The previous prime is 21433421. The next prime is 21433427. The reversal of 21433422 is 22433412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21433421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96003 + ... + 96225.

It is an arithmetic number, because the mean of its divisors is an integer number (1368864).

Almost surely, 2^21433422 is an apocalyptic number.

21433422 is an abundant number, since it is smaller than the sum of its proper divisors (22370226).

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

21433422 is a wasteful number, since it uses less digits than its factorization.

21433422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504.

The product of its digits is 1152, while the sum is 21.

The square root of 21433422 is about 4629.6243908119. The cubic root of 21433422 is about 277.7775682250. Note that the first 3 decimals are identical.

Adding to 21433422 its reverse (22433412), we get a palindrome (43866834).

It can be divided in two parts, 2143 and 3422, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 21433422 in words is "twenty-one million, four hundred thirty-three thousand, four hundred twenty-two".