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138050 = 25211251
BaseRepresentation
bin100001101101000010
321000100222
4201231002
513404200
62543042
71113323
oct415502
9230328
10138050
11947a0
1267a82
134aab3
143844a
152ad85
hex21b42

138050 has 24 divisors (see below), whose sum is σ = 281232. Its totient is φ = 50000.

The previous prime is 138041. The next prime is 138053. The reversal of 138050 is 50831.

Adding to 138050 its reverse (50831), we get a palindrome (188881).

It is a hoax number, since the sum of its digits (17) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (138053) by changing a digit.

138050 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425 + ... + 675.

It is an arithmetic number, because the mean of its divisors is an integer number (11718).

2138050 is an apocalyptic number.

138050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138050 is an abundant number, since it is smaller than the sum of its proper divisors (143182).

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

138050 is a wasteful number, since it uses less digits than its factorization.

138050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 138050 is about 371.5508040632. The cubic root of 138050 is about 51.6827328923.

The spelling of 138050 in words is "one hundred thirty-eight thousand, fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 251 275 502 550 1255 2510 2761 5522 6275 12550 13805 27610 69025 138050