21468003 has 4 divisors (see below), whose sum is σ = 28624008. Its totient is φ = 14312000.

The previous prime is 21467989. The next prime is 21468011. The reversal of 21468003 is 30086412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21468003 - 2¹⁶ = 21402467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21460003) 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 3 ways as a sum of consecutive naturals, for example, 3577998 + ... + 3578003.

It is an arithmetic number, because the mean of its divisors is an integer number (7156002).

Almost surely, 2^21468003 is an apocalyptic number.

21468003 is a deficient number, since it is larger than the sum of its proper divisors (7156005).

21468003 is an equidigital number, since it uses as much as digits as its factorization.

21468003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156004.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 21468003 is about 4633.3576378259. The cubic root of 21468003 is about 277.9268780996.

The spelling of 21468003 in words is "twenty-one million, four hundred sixty-eight thousand, three".