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22841380 = 2251142069
BaseRepresentation
bin101011100100…
…0100000100100
31120222110111001
41113020200210
521321411010
62133323044
7365101642
oct127104044
946873431
1022841380
1111991081
127796484
134969813
143068192
152012c3a
hex15c8824

22841380 has 12 divisors (see below), whose sum is σ = 47966940. Its totient is φ = 9136544.

The previous prime is 22841359. The next prime is 22841381. The reversal of 22841380 is 8314822.

It can be written as a sum of positive squares in 2 ways, for example, as 16257024 + 6584356 = 4032^2 + 2566^2 .

It is not an unprimeable number, because it can be changed into a prime (22841381) 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, 571015 + ... + 571054.

It is an arithmetic number, because the mean of its divisors is an integer number (3997245).

Almost surely, 222841380 is an apocalyptic number.

22841380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22841380 is an abundant number, since it is smaller than the sum of its proper divisors (25125560).

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

22841380 is a wasteful number, since it uses less digits than its factorization.

22841380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142078 (or 1142076 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 22841380 is about 4779.2656339651. The cubic root of 22841380 is about 283.7314296294.

The spelling of 22841380 in words is "twenty-two million, eight hundred forty-one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 1142069 2284138 4568276 5710345 11420690 22841380