20183641 has 8 divisors (see below), whose sum is σ = 21868704. Its totient is φ = 18553920.

The previous prime is 20183621. The next prime is 20183651. The reversal of 20183641 is 14638102.

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 20183641 - 2⁵ = 20183609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20183621) 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, 13075 + ... + 14536.

It is an arithmetic number, because the mean of its divisors is an integer number (2733588).

Almost surely, 2^20183641 is an apocalyptic number.

It is an amenable number.

20183641 is a deficient number, since it is larger than the sum of its proper divisors (1685063).

20183641 is a wasteful number, since it uses less digits than its factorization.

20183641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27671.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20183641 is about 4492.6207273706. The cubic root of 20183641 is about 272.2700290203.

The spelling of 20183641 in words is "twenty million, one hundred eighty-three thousand, six hundred forty-one".