20694271 has 8 divisors (see below), whose sum is σ = 22517264. Its totient is φ = 18904320.

The previous prime is 20694263. The next prime is 20694283. The reversal of 20694271 is 17249602.

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 20694271 - 2³ = 20694263 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 (20694071) 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, 6945 + ... + 9466.

It is an arithmetic number, because the mean of its divisors is an integer number (2814658).

Almost surely, 2^20694271 is an apocalyptic number.

20694271 is a deficient number, since it is larger than the sum of its proper divisors (1822993).

20694271 is a wasteful number, since it uses less digits than its factorization.

20694271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16521.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 20694271 is about 4549.0956244071. The cubic root of 20694271 is about 274.5470051764.

The spelling of 20694271 in words is "twenty million, six hundred ninety-four thousand, two hundred seventy-one".