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8138495 = 51795747
BaseRepresentation
bin11111000010111011111111
3120022110220202
4133002323333
54040412440
6450234115
7126114251
oct37027377
916273822
108138495
114659632
12288593b
1318bc4a1
14111bcd1
15aab615
hex7c2eff

8138495 has 8 divisors (see below), whose sum is σ = 10340784. Its totient is φ = 6127744.

The previous prime is 8138489. The next prime is 8138497. The reversal of 8138495 is 5948318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8138495 - 28 = 8138239 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 (8138497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47789 + ... + 47958.

It is an arithmetic number, because the mean of its divisors is an integer number (1292598).

Almost surely, 28138495 is an apocalyptic number.

8138495 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8138495 is a deficient number, since it is larger than the sum of its proper divisors (2202289).

8138495 is a wasteful number, since it uses less digits than its factorization.

8138495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95769.

The product of its digits is 34560, while the sum is 38.

The square root of 8138495 is about 2852.8047602316. The cubic root of 8138495 is about 201.1475283016.

The spelling of 8138495 in words is "eight million, one hundred thirty-eight thousand, four hundred ninety-five".

Divisors: 1 5 17 85 95747 478735 1627699 8138495