20361180 has 48 divisors (see below), whose sum is σ = 65157120. Its totient is φ = 4653888.

The previous prime is 20361163. The next prime is 20361181. The reversal of 20361180 is 8116302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20361181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23820 + ... + 24659.

It is an arithmetic number, because the mean of its divisors is an integer number (1357440).

Almost surely, 2^20361180 is an apocalyptic number.

20361180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20361180 is an abundant number, since it is smaller than the sum of its proper divisors (44795940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20361180 is a wasteful number, since it uses less digits than its factorization.

20361180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48498 (or 48496 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20361180 is about 4512.3364236280. The cubic root of 20361180 is about 273.0660120260.

Adding to 20361180 its reverse (8116302), we get a palindrome (28477482).

The spelling of 20361180 in words is "twenty million, three hundred sixty-one thousand, one hundred eighty".