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19248189 = 313074909
BaseRepresentation
bin100100101101…
…1010000111101
31100012220112220
41021123100331
514411420224
61524315553
7322415112
oct111332075
940186486
1019248189
11a9574a4
126542bb9
133cac17c
1427b0909
151a53279
hex125b43d

19248189 has 8 divisors (see below), whose sum is σ = 25689120. Its totient is φ = 12819696.

The previous prime is 19248161. The next prime is 19248191. The reversal of 19248189 is 98184291.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19248189 - 25 = 19248157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19248189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19248139) 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 7 ways as a sum of consecutive naturals, for example, 1467 + ... + 6375.

It is an arithmetic number, because the mean of its divisors is an integer number (3211140).

Almost surely, 219248189 is an apocalyptic number.

It is an amenable number.

19248189 is a deficient number, since it is larger than the sum of its proper divisors (6440931).

19248189 is a wasteful number, since it uses less digits than its factorization.

19248189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6219.

The product of its digits is 41472, while the sum is 42.

The square root of 19248189 is about 4387.2758062379. The cubic root of 19248189 is about 267.9970158203.

The spelling of 19248189 in words is "nineteen million, two hundred forty-eight thousand, one hundred eighty-nine".

Divisors: 1 3 1307 3921 4909 14727 6416063 19248189