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38908065 = 3572316111
BaseRepresentation
bin1001010001101…
…1000010100001
32201012201211110
42110123002201
534430024230
63505533533
7651466410
oct224330241
981181743
1038908065
111aa65229
12110442a9
1380a3831
14524b477
1536384b0
hex251b0a1

38908065 has 32 divisors (see below), whose sum is σ = 74244096. Its totient is φ = 17012160.

The previous prime is 38908043. The next prime is 38908073. The reversal of 38908065 is 56080983.

It is not a de Polignac number, because 38908065 - 25 = 38908033 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5641 + ... + 10470.

It is an arithmetic number, because the mean of its divisors is an integer number (2320128).

Almost surely, 238908065 is an apocalyptic number.

38908065 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38908065 is a deficient number, since it is larger than the sum of its proper divisors (35336031).

38908065 is a wasteful number, since it uses less digits than its factorization.

38908065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16149.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 38908065 is about 6237.6329645147. The cubic root of 38908065 is about 338.8544636814.

The spelling of 38908065 in words is "thirty-eight million, nine hundred eight thousand, sixty-five".

Divisors: 1 3 5 7 15 21 23 35 69 105 115 161 345 483 805 2415 16111 48333 80555 112777 241665 338331 370553 563885 1111659 1691655 1852765 2593871 5558295 7781613 12969355 38908065