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88008139 = 241365179
BaseRepresentation
bin1010011111011…
…10010111001011
320010121021110201
411033232113023
5140012230024
612422153031
72116025332
oct517562713
9203537421
1088008139
11457508aa
1225582777
131530542b
14b98cd19
157ad6744
hex53ee5cb

88008139 has 4 divisors (see below), whose sum is σ = 88373560. Its totient is φ = 87642720.

The previous prime is 88008119. The next prime is 88008149. The reversal of 88008139 is 93180088.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88008139 - 221 = 85910987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 88008098 and 88008107.

It is not an unprimeable number, because it can be changed into a prime (88008119) 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 3 ways as a sum of consecutive naturals, for example, 182349 + ... + 182830.

It is an arithmetic number, because the mean of its divisors is an integer number (22093390).

Almost surely, 288008139 is an apocalyptic number.

88008139 is a deficient number, since it is larger than the sum of its proper divisors (365421).

88008139 is a wasteful number, since it uses less digits than its factorization.

88008139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365420.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 88008139 is about 9381.2653197743. The cubic root of 88008139 is about 444.8097305502.

The spelling of 88008139 in words is "eighty-eight million, eight thousand, one hundred thirty-nine".

Divisors: 1 241 365179 88008139