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38638083239 = 73112647473
BaseRepresentation
bin100011111111000000…
…100101110010100111
310200201202100222220222
4203333000211302213
51113112322130424
625430004114555
72535326201000
oct437700456247
9120652328828
1038638083239
11154282108a8
1275a3995a5b
133849b79062
141c277701a7
151012165e5e
hex8ff025ca7

38638083239 has 8 divisors (see below), whose sum is σ = 45058989600. Its totient is φ = 33118356768.

The previous prime is 38638083217. The next prime is 38638083247. The reversal of 38638083239 is 93238083683.

It is not a de Polignac number, because 38638083239 - 216 = 38638017703 is a prime.

It is a super-2 number, since 2×386380832392 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38638083269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56323394 + ... + 56324079.

It is an arithmetic number, because the mean of its divisors is an integer number (5632373700).

Almost surely, 238638083239 is an apocalyptic number.

38638083239 is a deficient number, since it is larger than the sum of its proper divisors (6420906361).

38638083239 is an equidigital number, since it uses as much as digits as its factorization.

38638083239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112647494 (or 112647480 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 38638083239 in words is "thirty-eight billion, six hundred thirty-eight million, eighty-three thousand, two hundred thirty-nine".

Divisors: 1 7 49 343 112647473 788532311 5519726177 38638083239