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214215345 = 32512737483
BaseRepresentation
bin11001100010010…
…10101010110001
3112221002021012200
430301022222301
5414314342340
633131213413
75210541351
oct1461125261
9487067180
10214215345
11aaa12183
125b8a7269
13354c3756
1420642b61
1513c16330
hexcc4aab1

214215345 has 24 divisors (see below), whose sum is σ = 374240256. Its totient is φ = 113345568.

The previous prime is 214215319. The next prime is 214215359. The reversal of 214215345 is 543512412.

It is not a de Polignac number, because 214215345 - 211 = 214213297 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 13027 + ... + 24456.

It is an arithmetic number, because the mean of its divisors is an integer number (15593344).

Almost surely, 2214215345 is an apocalyptic number.

It is an amenable number.

214215345 is a deficient number, since it is larger than the sum of its proper divisors (160024911).

214215345 is a wasteful number, since it uses less digits than its factorization.

214215345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37621 (or 37618 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 214215345 is about 14636.0973281814. The cubic root of 214215345 is about 598.3429696300.

Adding to 214215345 its reverse (543512412), we get a palindrome (757727757).

The spelling of 214215345 in words is "two hundred fourteen million, two hundred fifteen thousand, three hundred forty-five".

Divisors: 1 3 5 9 15 45 127 381 635 1143 1905 5715 37483 112449 187415 337347 562245 1686735 4760341 14281023 23801705 42843069 71405115 214215345