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214950005 = 542990001
BaseRepresentation
bin11001100111111…
…10000001110101
3112222110120222022
430303332001311
5420011400010
633155042525
75220021254
oct1463760165
9488416868
10214950005
11100374136
125bba0445
13356bcc6a
142079479b
1513d0dd55
hexccfe075

214950005 has 4 divisors (see below), whose sum is σ = 257940012. Its totient is φ = 171960000.

The previous prime is 214949981. The next prime is 214950007. The reversal of 214950005 is 500059412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23902321 + 191047684 = 4889^2 + 13822^2 .

It is not a de Polignac number, because 214950005 - 224 = 198172789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214950007) 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, 21494996 + ... + 21495005.

It is an arithmetic number, because the mean of its divisors is an integer number (64485003).

Almost surely, 2214950005 is an apocalyptic number.

It is an amenable number.

214950005 is a deficient number, since it is larger than the sum of its proper divisors (42990007).

214950005 is an equidigital number, since it uses as much as digits as its factorization.

214950005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42990006.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 214950005 is about 14661.1733841463. The cubic root of 214950005 is about 599.0262027941.

The spelling of 214950005 in words is "two hundred fourteen million, nine hundred fifty thousand, five".

Divisors: 1 5 42990001 214950005