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8000138 = 253711063
BaseRepresentation
bin11110100001001010001010
3120001110010102
4132201022022
54022001023
6443245402
7125000006
oct36411212
916043112
108000138
114574693
122819862
131871513
1410c3706
15a80628
hex7a128a

8000138 has 16 divisors (see below), whose sum is σ = 12410496. Its totient is φ = 3865680.

The previous prime is 8000119. The next prime is 8000141. The reversal of 8000138 is 8310008.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6995 + ... + 8057.

It is an arithmetic number, because the mean of its divisors is an integer number (775656).

Almost surely, 28000138 is an apocalyptic number.

8000138 is a deficient number, since it is larger than the sum of its proper divisors (4410358).

8000138 is a wasteful number, since it uses less digits than its factorization.

8000138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 8000138 is about 2828.4515198249. The cubic root of 8000138 is about 200.0011499934.

The spelling of 8000138 in words is "eight million, one hundred thirty-eight", and thus it is an aban number.

Divisors: 1 2 53 71 106 142 1063 2126 3763 7526 56339 75473 112678 150946 4000069 8000138