21467849 has 8 divisors (see below), whose sum is σ = 23190720. Its totient is φ = 19755216.

The previous prime is 21467843. The next prime is 21467851. The reversal of 21467849 is 94876412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21467849 - 2⁴ = 21467833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21467843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2132 + ... + 6890.

It is an arithmetic number, because the mean of its divisors is an integer number (2898840).

Almost surely, 2^21467849 is an apocalyptic number.

It is an amenable number.

21467849 is a deficient number, since it is larger than the sum of its proper divisors (1722871).

21467849 is a wasteful number, since it uses less digits than its factorization.

21467849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119.

The product of its digits is 96768, while the sum is 41.

The square root of 21467849 is about 4633.3410191783. The cubic root of 21467849 is about 277.9262135316.

The spelling of 21467849 in words is "twenty-one million, four hundred sixty-seven thousand, eight hundred forty-nine".