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38214289 = 311232719
BaseRepresentation
bin1001000111000…
…1101010010001
32122220111011001
42101301222101
534240324124
63443022001
7642546631
oct221615221
978814131
1038214289
111a630a63
121096a901
137bbcb09
14510a6c1
15354cb44
hex2471a91

38214289 has 4 divisors (see below), whose sum is σ = 39447040. Its totient is φ = 36981540.

The previous prime is 38214277. The next prime is 38214299. The reversal of 38214289 is 98241283.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38214289 - 27 = 38214161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38214299) 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, 616329 + ... + 616390.

It is an arithmetic number, because the mean of its divisors is an integer number (9861760).

Almost surely, 238214289 is an apocalyptic number.

It is an amenable number.

38214289 is a deficient number, since it is larger than the sum of its proper divisors (1232751).

38214289 is a wasteful number, since it uses less digits than its factorization.

38214289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232750.

The product of its digits is 27648, while the sum is 37.

The square root of 38214289 is about 6181.7707010209. The cubic root of 38214289 is about 336.8283164290.

It can be divided in two parts, 38214 and 289, that added together give a triangular number (38503 = T277).

The spelling of 38214289 in words is "thirty-eight million, two hundred fourteen thousand, two hundred eighty-nine".

Divisors: 1 31 1232719 38214289