21467133 has 8 divisors (see below), whose sum is σ = 31803200. Its totient is φ = 14311404.

The previous prime is 21467129. The next prime is 21467153. The reversal of 21467133 is 33176412.

It is not a de Polignac number, because 21467133 - 2² = 21467129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 795079 = 21467133 / (2 + 1 + 4 + 6 + 7 + 1 + 3 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21467097 and 21467106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21467113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397513 + ... + 397566.

It is an arithmetic number, because the mean of its divisors is an integer number (3975400).

Almost surely, 2^21467133 is an apocalyptic number.

It is an amenable number.

21467133 is a deficient number, since it is larger than the sum of its proper divisors (10336067).

21467133 is an equidigital number, since it uses as much as digits as its factorization.

21467133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795088 (or 795082 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 21467133 is about 4633.2637524751. The cubic root of 21467133 is about 277.9231236804.

The spelling of 21467133 in words is "twenty-one million, four hundred sixty-seven thousand, one hundred thirty-three".