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38847185357 = 192323865007
BaseRepresentation
bin100100001011011110…
…010000000111001101
310201021022211111002212
4210023132100013031
51114024334412412
625502434000205
72543445425111
oct441336200715
9121238744085
1038847185357
1115525250372
127641a16065
13388129c316
141c47441741
1510256bc222
hex90b7901cd

38847185357 has 12 divisors (see below), whose sum is σ = 42746988480. Its totient is φ = 35202474648.

The previous prime is 38847185353. The next prime is 38847185371. The reversal of 38847185357 is 75358174883.

It is not a de Polignac number, because 38847185357 - 22 = 38847185353 is a prime.

It is a super-2 number, since 2×388471853572 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38847185296 and 38847185305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38847185353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1922453 + ... + 1942554.

It is an arithmetic number, because the mean of its divisors is an integer number (3562249040).

Almost surely, 238847185357 is an apocalyptic number.

It is an amenable number.

38847185357 is a deficient number, since it is larger than the sum of its proper divisors (3899803123).

38847185357 is a wasteful number, since it uses less digits than its factorization.

38847185357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865072 (or 3865049 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 59.

The spelling of 38847185357 in words is "thirty-eight billion, eight hundred forty-seven million, one hundred eighty-five thousand, three hundred fifty-seven".

Divisors: 1 19 23 437 529 10051 3865007 73435133 88895161 1689008059 2044588703 38847185357