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214828085 = 5291481573
BaseRepresentation
bin11001100111000…
…00010000110101
3112222020101201202
430303200100311
5414443444320
633152302245
75216002643
oct1463402065
9488211652
10214828085
111002a057a
125bb41985
1335679614
1420762193
1513cd7b75
hexcce0435

214828085 has 8 divisors (see below), whose sum is σ = 266683320. Its totient is φ = 165936064.

The previous prime is 214828067. The next prime is 214828087. The reversal of 214828085 is 580828412.

It can be written as a sum of positive squares in 4 ways, for example, as 90973444 + 123854641 = 9538^2 + 11129^2 .

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 214828085 - 28 = 214827829 is a prime.

It is a super-2 number, since 2×2148280852 = 92302212209534450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214828087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740642 + ... + 740931.

It is an arithmetic number, because the mean of its divisors is an integer number (33335415).

Almost surely, 2214828085 is an apocalyptic number.

It is an amenable number.

214828085 is a deficient number, since it is larger than the sum of its proper divisors (51855235).

214828085 is a wasteful number, since it uses less digits than its factorization.

214828085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481607.

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 214828085 is about 14657.0148734318. The cubic root of 214828085 is about 598.9129251551.

The spelling of 214828085 in words is "two hundred fourteen million, eight hundred twenty-eight thousand, eighty-five".

Divisors: 1 5 29 145 1481573 7407865 42965617 214828085