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22288222 = 2112274463
BaseRepresentation
bin101010100000…
…1011101011110
31112221100200201
41111001131132
521201210342
62113414114
7360306145
oct125013536
945840621
1022288222
1111643520
12756a33a
134804ac8
142d6275c
151e53db7
hex154175e

22288222 has 16 divisors (see below), whose sum is σ = 36640512. Its totient is φ = 10084120.

The previous prime is 22288213. The next prime is 22288223.

22288222 is nontrivially palindromic in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22288223) 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 7 ways as a sum of consecutive naturals, for example, 2763 + ... + 7225.

It is an arithmetic number, because the mean of its divisors is an integer number (2290032).

Almost surely, 222288222 is an apocalyptic number.

22288222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22288222 is a deficient number, since it is larger than the sum of its proper divisors (14352290).

22288222 is a wasteful number, since it uses less digits than its factorization.

22288222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703.

The product of its digits is 4096, while the sum is 28.

The square root of 22288222 is about 4721.0403514480. The cubic root of 22288222 is about 281.4222785158.

The spelling of 22288222 in words is "twenty-two million, two hundred eighty-eight thousand, two hundred twenty-two".

Divisors: 1 2 11 22 227 454 2497 4463 4994 8926 49093 98186 1013101 2026202 11144111 22288222