21468271 has 16 divisors (see below), whose sum is σ = 25084800. Its totient is φ = 18165600.

The previous prime is 21468259. The next prime is 21468277. The reversal of 21468271 is 17286412.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21468271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21468277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11461 + ... + 13201.

It is an arithmetic number, because the mean of its divisors is an integer number (1567800).

Almost surely, 2^21468271 is an apocalyptic number.

21468271 is a deficient number, since it is larger than the sum of its proper divisors (3616529).

21468271 is a wasteful number, since it uses less digits than its factorization.

21468271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830.

The product of its digits is 5376, while the sum is 31.

The square root of 21468271 is about 4633.3865584473. The cubic root of 21468271 is about 277.9280346129.

The spelling of 21468271 in words is "twenty-one million, four hundred sixty-eight thousand, two hundred seventy-one".