[go: up one dir, main page]

Search a number
-
+
21194167 = 113187559
BaseRepresentation
bin101000011011…
…0010110110111
31110212202221011
41100312112313
520411203132
62034133051
7345101401
oct120662667
943782834
1021194167
1110a66545
127121187
134510b37
142b59b71
151cd9b47
hex14365b7

21194167 has 4 divisors (see below), whose sum is σ = 21381840. Its totient is φ = 21006496.

The previous prime is 21194149. The next prime is 21194197. The reversal of 21194167 is 76149112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21194167 - 219 = 20669879 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 (21194197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93667 + ... + 93892.

It is an arithmetic number, because the mean of its divisors is an integer number (5345460).

Almost surely, 221194167 is an apocalyptic number.

21194167 is a deficient number, since it is larger than the sum of its proper divisors (187673).

21194167 is a wasteful number, since it uses less digits than its factorization.

21194167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187672.

The product of its digits is 3024, while the sum is 31.

The square root of 21194167 is about 4603.7123063893. The cubic root of 21194167 is about 276.7401151747.

The spelling of 21194167 in words is "twenty-one million, one hundred ninety-four thousand, one hundred sixty-seven".

Divisors: 1 113 187559 21194167