20010189 has 8 divisors (see below), whose sum is σ = 26707392. Its totient is φ = 13326560.

The previous prime is 20010187. The next prime is 20010197. The reversal of 20010189 is 98101002.

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 20010189 - 2¹ = 20010187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010187) 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, 784 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (3338424).

Almost surely, 2^20010189 is an apocalyptic number.

It is an amenable number.

20010189 is a deficient number, since it is larger than the sum of its proper divisors (6697203).

20010189 is a wasteful number, since it uses less digits than its factorization.

20010189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 20010189 is about 4473.2749747808. The cubic root of 20010189 is about 271.4878491691.

The spelling of 20010189 in words is "twenty million, ten thousand, one hundred eighty-nine".