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138807341 = 677205033
BaseRepresentation
bin10000100011000…
…00100000101101
3100200012010212122
420101200200231
5241013313331
621435042325
73303562061
oct1021404055
9320163778
10138807341
1171398012
123a5a03a5
13229b052a
1414613aa1
15c2bd17b
hex846082d

138807341 has 4 divisors (see below), whose sum is σ = 139013052. Its totient is φ = 138601632.

The previous prime is 138807307. The next prime is 138807349. The reversal of 138807341 is 143708831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 137475625 + 1331716 = 11725^2 + 1154^2 .

It is a cyclic number.

It is not a de Polignac number, because 138807341 - 214 = 138790957 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 (138807349) 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, 101840 + ... + 103193.

It is an arithmetic number, because the mean of its divisors is an integer number (34753263).

Almost surely, 2138807341 is an apocalyptic number.

It is an amenable number.

138807341 is a deficient number, since it is larger than the sum of its proper divisors (205711).

138807341 is an equidigital number, since it uses as much as digits as its factorization.

138807341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205710.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 138807341 is about 11781.6527278646. The cubic root of 138807341 is about 517.7707091820.

The spelling of 138807341 in words is "one hundred thirty-eight million, eight hundred seven thousand, three hundred forty-one".

Divisors: 1 677 205033 138807341