21434468 has 24 divisors (see below), whose sum is σ = 41875680. Its totient is φ = 9515520.

The previous prime is 21434453. The next prime is 21434471. The reversal of 21434468 is 86443412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3773 + ... + 7556.

It is an arithmetic number, because the mean of its divisors is an integer number (1744820).

Almost surely, 2^21434468 is an apocalyptic number.

It is an amenable number.

21434468 is a deficient number, since it is larger than the sum of its proper divisors (20441212).

21434468 is a wasteful number, since it uses less digits than its factorization.

21434468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11387 (or 11385 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 21434468 is about 4629.7373575614. The cubic root of 21434468 is about 277.7820868783.

It can be divided in two parts, 214344 and 68, that added together give a palindrome (214412).

The spelling of 21434468 in words is "twenty-one million, four hundred thirty-four thousand, four hundred sixty-eight".