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22130233 = 108720359
BaseRepresentation
bin101010001101…
…0111000111001
31112122022222021
41110122320321
521131131413
62110154441
7356050426
oct124327071
945568867
1022130233
1111545854
1274b2a21
13477ac18
142d20d4d
151e2218d
hex151ae39

22130233 has 4 divisors (see below), whose sum is σ = 22151680. Its totient is φ = 22108788.

The previous prime is 22130221. The next prime is 22130237. The reversal of 22130233 is 33203122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22130233 - 29 = 22129721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22130237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9093 + ... + 11266.

It is an arithmetic number, because the mean of its divisors is an integer number (5537920).

Almost surely, 222130233 is an apocalyptic number.

It is an amenable number.

22130233 is a deficient number, since it is larger than the sum of its proper divisors (21447).

22130233 is a wasteful number, since it uses less digits than its factorization.

22130233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21446.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 22130233 is about 4704.2781592929. The cubic root of 22130233 is about 280.7557516728.

Adding to 22130233 its reverse (33203122), we get a palindrome (55333355).

The spelling of 22130233 in words is "twenty-two million, one hundred thirty thousand, two hundred thirty-three".

Divisors: 1 1087 20359 22130233