20635141 has 8 divisors (see below), whose sum is σ = 21463904. Its totient is φ = 19822320.

The previous prime is 20635103. The next prime is 20635169. The reversal of 20635141 is 14153602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20635141 is a prime.

It is a super-3 number, since 3×20635141³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20635171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1311 + ... + 6556.

It is an arithmetic number, because the mean of its divisors is an integer number (2682988).

Almost surely, 2^20635141 is an apocalyptic number.

20635141 is the 2623-rd octagonal number.

It is an amenable number.

20635141 is a deficient number, since it is larger than the sum of its proper divisors (828763).

20635141 is an equidigital number, since it uses as much as digits as its factorization.

20635141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7971.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 20635141 is about 4542.5918812942. The cubic root of 20635141 is about 274.2852668618.

Adding to 20635141 its reverse (14153602), we get a palindrome (34788743).

The spelling of 20635141 in words is "twenty million, six hundred thirty-five thousand, one hundred forty-one".