20361105 has 32 divisors (see below), whose sum is σ = 36979200. Its totient is φ = 10624896.

The previous prime is 20361101. The next prime is 20361109. The reversal of 20361105 is 50116302.

It is an interprime number because it is at equal distance from previous prime (20361101) and next prime (20361109).

It is not a de Polignac number, because 20361105 - 2² = 20361101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4741 + ... + 7949.

It is an arithmetic number, because the mean of its divisors is an integer number (1155600).

Almost surely, 2^20361105 is an apocalyptic number.

It is an amenable number.

20361105 is a deficient number, since it is larger than the sum of its proper divisors (16618095).

20361105 is a wasteful number, since it uses less digits than its factorization.

20361105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270 (or 3264 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20361105 is about 4512.3281130698. The cubic root of 20361105 is about 273.0656767478.

Adding to 20361105 its reverse (50116302), we get a palindrome (70477407).

The spelling of 20361105 in words is "twenty million, three hundred sixty-one thousand, one hundred five".