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38131268 = 2271361831
BaseRepresentation
bin1001000101110…
…1011001000100
32122202021021012
42101131121010
534230200033
63441141352
7642052610
oct221353104
978667235
1038131268
111a58464a
121092a858
137b910a6
1450c8340
153533248
hex245d644

38131268 has 12 divisors (see below), whose sum is σ = 76262592. Its totient is φ = 16341960.

The previous prime is 38131267. The next prime is 38131297. The reversal of 38131268 is 86213183.

It is a happy number.

38131268 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (38131267) 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 3 ways as a sum of consecutive naturals, for example, 680888 + ... + 680943.

It is an arithmetic number, because the mean of its divisors is an integer number (6355216).

Almost surely, 238131268 is an apocalyptic number.

It is an amenable number.

38131268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

38131268 is a wasteful number, since it uses less digits than its factorization.

38131268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361842 (or 1361840 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 38131268 is about 6175.0520645578. The cubic root of 38131268 is about 336.5842183927.

The spelling of 38131268 in words is "thirty-eight million, one hundred thirty-one thousand, two hundred sixty-eight".

Divisors: 1 2 4 7 14 28 1361831 2723662 5447324 9532817 19065634 38131268