20473189 has 8 divisors (see below), whose sum is σ = 22380480. Its totient is φ = 18573600.

The previous prime is 20473181. The next prime is 20473213. The reversal of 20473189 is 98137402.

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 20473189 - 2³ = 20473181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20473181) 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, 4624 + ... + 7894.

It is an arithmetic number, because the mean of its divisors is an integer number (2797560).

Almost surely, 2^20473189 is an apocalyptic number.

It is an amenable number.

20473189 is a deficient number, since it is larger than the sum of its proper divisors (1907291).

20473189 is a wasteful number, since it uses less digits than its factorization.

20473189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3851.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20473189 is about 4524.7308207229. The cubic root of 20473189 is about 273.5658182977.

The spelling of 20473189 in words is "twenty million, four hundred seventy-three thousand, one hundred eighty-nine".