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214280805 = 3514285387
BaseRepresentation
bin11001100010110…
…10101001100101
3112221012121000010
430301122221211
5414323441210
633132440433
75211233244
oct1461325145
9487177003
10214280805
11aaa57382
125b919119
133551749b
142065c95b
1513c2a920
hexcc5aa65

214280805 has 8 divisors (see below), whose sum is σ = 342849312. Its totient is φ = 114283088.

The previous prime is 214280791. The next prime is 214280819. The reversal of 214280805 is 508082412.

214280805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (214280791) and next prime (214280819).

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

It is a cyclic number.

It is not a de Polignac number, because 214280805 - 212 = 214276709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7142679 + ... + 7142708.

It is an arithmetic number, because the mean of its divisors is an integer number (42856164).

Almost surely, 2214280805 is an apocalyptic number.

It is an amenable number.

214280805 is a deficient number, since it is larger than the sum of its proper divisors (128568507).

214280805 is a wasteful number, since it uses less digits than its factorization.

214280805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14285395.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 214280805 is about 14638.3334092375. Note that the first 3 decimals coincide. The cubic root of 214280805 is about 598.4039107076.

The spelling of 214280805 in words is "two hundred fourteen million, two hundred eighty thousand, eight hundred five".

Divisors: 1 3 5 15 14285387 42856161 71426935 214280805