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38418669 = 3221120231
BaseRepresentation
bin1001001010001…
…1100011101101
32200021212111200
42102203203231
534313344134
63451240113
7644360532
oct222434355
980255450
1038418669
111a760573
1210a49039
137c61b53
145160d89
15358d499
hex24a38ed

38418669 has 12 divisors (see below), whose sum is σ = 55759392. Its totient is φ = 25489800.

The previous prime is 38418613. The next prime is 38418697. The reversal of 38418669 is 96681483.

38418669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 38418669 - 217 = 38287597 is a prime.

It is a super-2 number, since 2×384186692 = 2951988255463122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38418169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8217 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (4646616).

Almost surely, 238418669 is an apocalyptic number.

It is an amenable number.

38418669 is a deficient number, since it is larger than the sum of its proper divisors (17340723).

38418669 is a wasteful number, since it uses less digits than its factorization.

38418669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20448 (or 20445 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 38418669 is about 6198.2795193505. The cubic root of 38418669 is about 337.4277310282.

The spelling of 38418669 in words is "thirty-eight million, four hundred eighteen thousand, six hundred sixty-nine".

Divisors: 1 3 9 211 633 1899 20231 60693 182079 4268741 12806223 38418669