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38349397487 = 17113143913873
BaseRepresentation
bin100011101101110011…
…010101110111101111
310122222122011020112002
4203231303111313233
51112014421204422
625341212402515
72525222333402
oct435563256757
9118878136462
1038349397487
111529a264a35
12752317643b
13380211009b
141bdb2a3d39
15ee6b3e692
hex8edcd5def

38349397487 has 16 divisors (see below), whose sum is σ = 40996005120. Its totient is φ = 35746701312.

The previous prime is 38349397481. The next prime is 38349397573. The reversal of 38349397487 is 78479394383.

It is not a de Polignac number, because 38349397487 - 26 = 38349397423 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 (38349397481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757383 + ... + 2771255.

It is an arithmetic number, because the mean of its divisors is an integer number (2562250320).

Almost surely, 238349397487 is an apocalyptic number.

38349397487 is a deficient number, since it is larger than the sum of its proper divisors (2646607633).

38349397487 is a wasteful number, since it uses less digits than its factorization.

38349397487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15442.

The product of its digits is 109734912, while the sum is 65.

The spelling of 38349397487 in words is "thirty-eight billion, three hundred forty-nine million, three hundred ninety-seven thousand, four hundred eighty-seven".

Divisors: 1 17 113 1439 1921 13873 24463 162607 235841 1567649 2764319 19963247 26650033 339375199 2255846911 38349397487