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189474241 = 1117224931
BaseRepresentation
bin10110100101100…
…10010111000001
3111012112021210111
423102302113001
5342001133431
630445031321
74460335015
oct1322622701
9435467714
10189474241
1197a53890
1253555541
1330340348
141b242545
151197a7b1
hexb4b25c1

189474241 has 4 divisors (see below), whose sum is σ = 206699184. Its totient is φ = 172249300.

The previous prime is 189474217. The next prime is 189474269. The reversal of 189474241 is 142474981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142474981 = 1112952271.

It is a cyclic number.

It is not a de Polignac number, because 189474241 - 29 = 189473729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189474194 and 189474203.

It is not an unprimeable number, because it can be changed into a prime (189474281) 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 3 ways as a sum of consecutive naturals, for example, 8612455 + ... + 8612476.

It is an arithmetic number, because the mean of its divisors is an integer number (51674796).

Almost surely, 2189474241 is an apocalyptic number.

189474241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

189474241 is a deficient number, since it is larger than the sum of its proper divisors (17224943).

189474241 is a wasteful number, since it uses less digits than its factorization.

189474241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17224942.

The product of its digits is 64512, while the sum is 40.

The square root of 189474241 is about 13764.9642571276. The cubic root of 189474241 is about 574.3589488399.

The spelling of 189474241 in words is "one hundred eighty-nine million, four hundred seventy-four thousand, two hundred forty-one".

Divisors: 1 11 17224931 189474241