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39075138 = 2327927479
BaseRepresentation
bin1001010100001…
…1110101000010
32201112020000100
42111003311002
540000401023
63513303230
7653063454
oct225036502
981466010
1039075138
1120069803
1211104b16
1381318ab
1452922d4
15366cc43
hex2543d42

39075138 has 24 divisors (see below), whose sum is σ = 85737600. Its totient is φ = 12859704.

The previous prime is 39075133. The next prime is 39075139. The reversal of 39075138 is 83157093.

It is not an unprimeable number, because it can be changed into a prime (39075131) 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 11 ways as a sum of consecutive naturals, for example, 12318 + ... + 15161.

It is an arithmetic number, because the mean of its divisors is an integer number (3572400).

Almost surely, 239075138 is an apocalyptic number.

39075138 is an abundant number, since it is smaller than the sum of its proper divisors (46662462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39075138 is a wasteful number, since it uses less digits than its factorization.

39075138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27566 (or 27563 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 39075138 is about 6251.0109582371. The cubic root of 39075138 is about 339.3387899260.

It can be divided in two parts, 3907 and 5138, that added together give a triangular number (9045 = T134).

The spelling of 39075138 in words is "thirty-nine million, seventy-five thousand, one hundred thirty-eight".

Divisors: 1 2 3 6 9 18 79 158 237 474 711 1422 27479 54958 82437 164874 247311 494622 2170841 4341682 6512523 13025046 19537569 39075138