21796271 has 8 divisors (see below), whose sum is σ = 25036800. Its totient is φ = 18587448.

The previous prime is 21796253. The next prime is 21796279. The reversal of 21796271 is 17269712.

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

It is a cyclic number.

It is not a de Polignac number, because 21796271 - 2⁶ = 21796207 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 (21796279) 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, 6431 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (3129600).

Almost surely, 2^21796271 is an apocalyptic number.

21796271 is a deficient number, since it is larger than the sum of its proper divisors (3240529).

21796271 is a wasteful number, since it uses less digits than its factorization.

21796271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15853.

The product of its digits is 10584, while the sum is 35.

The square root of 21796271 is about 4668.6476628677. The cubic root of 21796271 is about 279.3363150128.

The spelling of 21796271 in words is "twenty-one million, seven hundred ninety-six thousand, two hundred seventy-one".