20894241 has 8 divisors (see below), whose sum is σ = 29497824. Its totient is φ = 13110080.

The previous prime is 20894231. The next prime is 20894261. The reversal of 20894241 is 14249802.

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 20894241 - 2¹³ = 20886049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20894199 and 20894208.

It is not an unprimeable number, because it can be changed into a prime (20894221) 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, 204795 + ... + 204896.

It is an arithmetic number, because the mean of its divisors is an integer number (3687228).

Almost surely, 2^20894241 is an apocalyptic number.

It is an amenable number.

20894241 is a deficient number, since it is larger than the sum of its proper divisors (8603583).

20894241 is a wasteful number, since it uses less digits than its factorization.

20894241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409711.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 20894241 is about 4571.0218769986. The cubic root of 20894241 is about 275.4284934253.

It can be divided in two parts, 208 and 94241, that added together give a palindrome (94449).

The spelling of 20894241 in words is "twenty million, eight hundred ninety-four thousand, two hundred forty-one".