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138748 = 2234687
BaseRepresentation
bin100001110111111100
321001022211
4201313330
513414443
62550204
71115341
oct416774
9231284
10138748
1195275
1268364
134b1cc
14387c8
152b19d
hex21dfc

138748 has 6 divisors (see below), whose sum is σ = 242816. Its totient is φ = 69372.

The previous prime is 138739. The next prime is 138763. The reversal of 138748 is 847831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 17340 + ... + 17347.

2138748 is an apocalyptic number.

It is an amenable number.

138748 is a deficient number, since it is larger than the sum of its proper divisors (104068).

138748 is a wasteful number, since it uses less digits than its factorization.

138748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34691 (or 34689 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 138748 is about 372.4889260099. The cubic root of 138748 is about 51.7696915268.

The spelling of 138748 in words is "one hundred thirty-eight thousand, seven hundred forty-eight".

Divisors: 1 2 4 34687 69374 138748