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222530893 = 1317117761
BaseRepresentation
bin11010100001110…
…00110101001101
3120111201201222221
431100320311031
5423431442033
634025335341
75341324054
oct1520706515
9514651887
10222530893
11104681832
1262637551
13371456b0
14217a939b
151480a12d
hexd438d4d

222530893 has 4 divisors (see below), whose sum is σ = 239648668. Its totient is φ = 205413120.

The previous prime is 222530851. The next prime is 222530899. The reversal of 222530893 is 398035222.

222530893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 60808804 + 161722089 = 7798^2 + 12717^2 .

It is a cyclic number.

It is not a de Polignac number, because 222530893 - 29 = 222530381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222530899) 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, 8558868 + ... + 8558893.

It is an arithmetic number, because the mean of its divisors is an integer number (59912167).

Almost surely, 2222530893 is an apocalyptic number.

It is an amenable number.

222530893 is a deficient number, since it is larger than the sum of its proper divisors (17117775).

222530893 is a wasteful number, since it uses less digits than its factorization.

222530893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17117774.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 222530893 is about 14917.4693899468. The cubic root of 222530893 is about 605.9871805426.

The spelling of 222530893 in words is "two hundred twenty-two million, five hundred thirty thousand, eight hundred ninety-three".

Divisors: 1 13 17117761 222530893