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38069139 = 3127163613
BaseRepresentation
bin1001000100111…
…0001110010011
32122122010001010
42101032032103
534221203024
63435542003
7641403513
oct221161623
978563033
1038069139
111a5419a9
12108ba903
137b6ba24
1450ad843
15351eb29
hex244e393

38069139 has 16 divisors (see below), whose sum is σ = 51556352. Its totient is φ = 24984288.

The previous prime is 38069131. The next prime is 38069159. The reversal of 38069139 is 93196083.

It is not a de Polignac number, because 38069139 - 23 = 38069131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38069097 and 38069106.

It is not an unprimeable number, because it can be changed into a prime (38069131) 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, 61797 + ... + 62409.

It is an arithmetic number, because the mean of its divisors is an integer number (3222272).

Almost surely, 238069139 is an apocalyptic number.

38069139 is a deficient number, since it is larger than the sum of its proper divisors (13487213).

38069139 is a wasteful number, since it uses less digits than its factorization.

38069139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 38069139 is about 6170.0193678788. The cubic root of 38069139 is about 336.4013150545.

The spelling of 38069139 in words is "thirty-eight million, sixty-nine thousand, one hundred thirty-nine".

Divisors: 1 3 127 163 381 489 613 1839 20701 62103 77851 99919 233553 299757 12689713 38069139