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22288289 = 175912671
BaseRepresentation
bin101010100000…
…1011110100001
31112221100210012
41111001132201
521201211124
62113414305
7360306302
oct125013641
945840705
1022288289
1111643581
12756a395
134804b4a
142d627a9
151e53e0e
hex15417a1

22288289 has 4 divisors (see below), whose sum is σ = 22302720. Its totient is φ = 22273860.

The previous prime is 22288267. The next prime is 22288291. The reversal of 22288289 is 98288222.

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 22288289 - 212 = 22284193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22288229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4577 + ... + 8094.

It is an arithmetic number, because the mean of its divisors is an integer number (5575680).

Almost surely, 222288289 is an apocalyptic number.

It is an amenable number.

22288289 is a deficient number, since it is larger than the sum of its proper divisors (14431).

22288289 is a wasteful number, since it uses less digits than its factorization.

22288289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14430.

The product of its digits is 73728, while the sum is 41.

The square root of 22288289 is about 4721.0474473362. The cubic root of 22288289 is about 281.4225605074.

The spelling of 22288289 in words is "twenty-two million, two hundred eighty-eight thousand, two hundred eighty-nine".

Divisors: 1 1759 12671 22288289