Search a number
-
+
138579341 = 977191987
BaseRepresentation
bin10000100001010…
…00110110001101
3100122202120010012
420100220312031
5240434014331
621430123005
73301622255
oct1020506615
9318676105
10138579341
117125178a
123a4b0465
1322930814
1414594965
15c27582b
hex8428d8d

138579341 has 8 divisors (see below), whose sum is σ = 140273280. Its totient is φ = 136891008.

The previous prime is 138579317. The next prime is 138579361. The reversal of 138579341 is 143975831.

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 138579341 - 26 = 138579277 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 (138579361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68750 + ... + 70736.

It is an arithmetic number, because the mean of its divisors is an integer number (17534160).

Almost surely, 2138579341 is an apocalyptic number.

It is an amenable number.

138579341 is a deficient number, since it is larger than the sum of its proper divisors (1693939).

138579341 is an equidigital number, since it uses as much as digits as its factorization.

138579341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803.

The product of its digits is 90720, while the sum is 41.

The square root of 138579341 is about 11771.9726894009. The cubic root of 138579341 is about 517.4870632409.

The spelling of 138579341 in words is "one hundred thirty-eight million, five hundred seventy-nine thousand, three hundred forty-one".

Divisors: 1 97 719 1987 69743 192739 1428653 138579341