21383468 has 24 divisors (see below), whose sum is σ = 40007520. Its totient is φ = 9975680.

The previous prime is 21383441. The next prime is 21383473. The reversal of 21383468 is 86438312.

It is a happy number.

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, 938 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (1666980).

Almost surely, 2^21383468 is an apocalyptic number.

It is an amenable number.

21383468 is a deficient number, since it is larger than the sum of its proper divisors (18624052).

21383468 is a wasteful number, since it uses less digits than its factorization.

21383468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737 (or 5735 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 21383468 is about 4624.2262055397. The cubic root of 21383468 is about 277.5615987487.

The spelling of 21383468 in words is "twenty-one million, three hundred eighty-three thousand, four hundred sixty-eight".