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214387930 = 2521438793
BaseRepresentation
bin11001100011101…
…00110011011010
3112221102000221201
430301310303122
5414340403210
633135024414
75212160461
oct1461646332
9487360851
10214387930
1110001a909
125b96b10a
1335554183
14206899d8
1513c4c53a
hexcc74cda

214387930 has 8 divisors (see below), whose sum is σ = 385898292. Its totient is φ = 85755168.

The previous prime is 214387913. The next prime is 214387931. The reversal of 214387930 is 39783412.

It can be written as a sum of positive squares in 2 ways, for example, as 193126609 + 21261321 = 13897^2 + 4611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 214387930.

It is not an unprimeable number, because it can be changed into a prime (214387931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10719387 + ... + 10719406.

Almost surely, 2214387930 is an apocalyptic number.

214387930 is a deficient number, since it is larger than the sum of its proper divisors (171510362).

214387930 is a wasteful number, since it uses less digits than its factorization.

214387930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21438800.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 214387930 is about 14641.9920092862. The cubic root of 214387930 is about 598.5036137420.

The spelling of 214387930 in words is "two hundred fourteen million, three hundred eighty-seven thousand, nine hundred thirty".

Divisors: 1 2 5 10 21438793 42877586 107193965 214387930