Search a number
-
+
189269231 = 2319934129
BaseRepresentation
bin10110100100000…
…00010011101111
3111012010212120112
423102000103233
5341423103411
630440410235
74455522224
oct1322002357
9435125515
10189269231
1197923858
125347697b
133029ac38
141b1cb94b
1511939b8b
hexb4804ef

189269231 has 8 divisors (see below), whose sum is σ = 197645280. Its totient is φ = 180905472.

The previous prime is 189269221. The next prime is 189269239. The reversal of 189269231 is 132962981.

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 189269231 - 210 = 189268207 is a prime.

It is a super-2 number, since 2×1892692312 = 71645683606662722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189269239) 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, 43775 + ... + 47903.

It is an arithmetic number, because the mean of its divisors is an integer number (24705660).

Almost surely, 2189269231 is an apocalyptic number.

189269231 is a deficient number, since it is larger than the sum of its proper divisors (8376049).

189269231 is a wasteful number, since it uses less digits than its factorization.

189269231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6145.

The product of its digits is 46656, while the sum is 41.

The square root of 189269231 is about 13757.5154370257. The cubic root of 189269231 is about 574.1517230959.

The spelling of 189269231 in words is "one hundred eighty-nine million, two hundred sixty-nine thousand, two hundred thirty-one".

Divisors: 1 23 1993 4129 45839 94967 8229097 189269231