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38912055 = 3571329983
BaseRepresentation
bin1001010001110…
…0000000110111
32201012221022020
42110130000313
534430141210
63510004223
7651514140
oct224340067
981187266
1038912055
111aa68226
1211046673
1380a55b0
14524cac7
153639770
hex251c037

38912055 has 64 divisors (see below), whose sum is σ = 79349760. Its totient is φ = 15837696.

The previous prime is 38912053. The next prime is 38912089. The reversal of 38912055 is 55021983.

It is not a de Polignac number, because 38912055 - 21 = 38912053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38912051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39094 + ... + 40076.

It is an arithmetic number, because the mean of its divisors is an integer number (1239840).

Almost surely, 238912055 is an apocalyptic number.

38912055 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

38912055 is an abundant number, since it is smaller than the sum of its proper divisors (40437705).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38912055 is a wasteful number, since it uses less digits than its factorization.

38912055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 38912055 is about 6237.9527891769. The cubic root of 38912055 is about 338.8660463965.

The spelling of 38912055 in words is "thirty-eight million, nine hundred twelve thousand, fifty-five".

Divisors: 1 3 5 7 13 15 21 29 35 39 65 87 91 105 145 195 203 273 377 435 455 609 983 1015 1131 1365 1885 2639 2949 3045 4915 5655 6881 7917 12779 13195 14745 20643 28507 34405 38337 39585 63895 85521 89453 103215 142535 191685 199549 268359 370591 427605 447265 598647 997745 1111773 1341795 1852955 2594137 2993235 5558865 7782411 12970685 38912055