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214770081 = 3611279241
BaseRepresentation
bin11001100110100…
…10000110100001
3112222010110011110
430303102012201
5414440120311
633151133533
75215341561
oct1463220641
9488113143
10214770081
11100260a39
125bb142a9
13356590b6
1420748da1
1513cc58a6
hexccd21a1

214770081 has 16 divisors (see below), whose sum is σ = 293378048. Its totient is φ = 139708800.

The previous prime is 214770071. The next prime is 214770103. The reversal of 214770081 is 180077412.

It is not a de Polignac number, because 214770081 - 219 = 214245793 is a prime.

It is a super-2 number, since 2×2147700812 = 92252375385493122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214770001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18621 + ... + 27861.

It is an arithmetic number, because the mean of its divisors is an integer number (18336128).

Almost surely, 2214770081 is an apocalyptic number.

It is an amenable number.

214770081 is a deficient number, since it is larger than the sum of its proper divisors (78607967).

214770081 is a wasteful number, since it uses less digits than its factorization.

214770081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9432.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 214770081 is about 14655.0360286149. The cubic root of 214770081 is about 598.8590177523.

The spelling of 214770081 in words is "two hundred fourteen million, seven hundred seventy thousand, eighty-one".

Divisors: 1 3 61 127 183 381 7747 9241 23241 27723 563701 1173607 1691103 3520821 71590027 214770081