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22223130 = 235743997
BaseRepresentation
bin101010011000…
…1100100011010
31112211001101220
41110301210122
521142120010
62112152510
7356615316
oct124614432
945731356
1022223130
11115a9626
127538736
1347b12a7
142d46b46
151e3e970
hex153191a

22223130 has 32 divisors (see below), whose sum is σ = 53460864. Its totient is φ = 5912256.

The previous prime is 22223119. The next prime is 22223137. The reversal of 22223130 is 3132222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22223137) 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 15 ways as a sum of consecutive naturals, for example, 21792 + ... + 22788.

It is an arithmetic number, because the mean of its divisors is an integer number (1670652).

Almost surely, 222223130 is an apocalyptic number.

22223130 is an abundant number, since it is smaller than the sum of its proper divisors (31237734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22223130 is a wasteful number, since it uses less digits than its factorization.

22223130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22223130 is about 4714.1414913004. The cubic root of 22223130 is about 281.1480499623.

Adding to 22223130 its reverse (3132222), we get a palindrome (25355352).

The spelling of 22223130 in words is "twenty-two million, two hundred twenty-three thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 743 997 1486 1994 2229 2991 3715 4458 4985 5982 7430 9970 11145 14955 22290 29910 740771 1481542 2222313 3703855 4444626 7407710 11111565 22223130