20189007 has 20 divisors (see below), whose sum is σ = 30300336. Its totient is φ = 13396320.

The previous prime is 20188997. The next prime is 20189011. The reversal of 20189007 is 70098102.

It is not a de Polignac number, because 20189007 - 2⁶ = 20188943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20189107) 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 19 ways as a sum of consecutive naturals, for example, 22318 + ... + 23204.

Almost surely, 2^20189007 is an apocalyptic number.

20189007 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20189007 is a deficient number, since it is larger than the sum of its proper divisors (10111329).

20189007 is an equidigital number, since it uses as much as digits as its factorization.

20189007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180 (or 1171 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 20189007 is about 4493.2178892193. The cubic root of 20189007 is about 272.2941553499.

It can be divided in two parts, 2018 and 9007, that added together give a square (11025 = 105²).

The spelling of 20189007 in words is "twenty million, one hundred eighty-nine thousand, seven".