20971741 has 8 divisors (see below), whose sum is σ = 24205824. Its totient is φ = 17797200.

The previous prime is 20971733. The next prime is 20971751. The reversal of 20971741 is 14717902.

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 20971741 - 2³ = 20971733 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 (20971751) 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, 14125 + ... + 15538.

It is an arithmetic number, because the mean of its divisors is an integer number (3025728).

Almost surely, 2^20971741 is an apocalyptic number.

It is an amenable number.

20971741 is a deficient number, since it is larger than the sum of its proper divisors (3234083).

20971741 is a wasteful number, since it uses less digits than its factorization.

20971741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29771.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 20971741 is about 4579.4913473005. The cubic root of 20971741 is about 275.7686090098.

It can be divided in two parts, 20971 and 741, that added together give a palindrome (21712).

The spelling of 20971741 in words is "twenty million, nine hundred seventy-one thousand, seven hundred forty-one".