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22026660 = 22352912659
BaseRepresentation
bin101010000000…
…1100110100100
31112110001220020
41110001212210
521114323120
62104035140
7355136445
oct124014644
945401806
1022026660
1111484a57
127462ab0
134742a36
142cd52cc
151e01640
hex15019a4

22026660 has 48 divisors (see below), whose sum is σ = 63806400. Its totient is φ = 5670784.

The previous prime is 22026649. The next prime is 22026661. The reversal of 22026660 is 6662022.

It is a self number, because there is not a number n which added to its sum of digits gives 22026660.

It is not an unprimeable number, because it can be changed into a prime (22026661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4590 + ... + 8069.

It is an arithmetic number, because the mean of its divisors is an integer number (1329300).

Almost surely, 222026660 is an apocalyptic number.

22026660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22026660 is an abundant number, since it is smaller than the sum of its proper divisors (41779740).

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

22026660 is a wasteful number, since it uses less digits than its factorization.

22026660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12700 (or 12698 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 22026660 is about 4693.2568649074. The cubic root of 22026660 is about 280.3170727832.

Adding to 22026660 its reverse (6662022), we get a palindrome (28688682).

The spelling of 22026660 in words is "twenty-two million, twenty-six thousand, six hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 29 30 58 60 87 116 145 174 290 348 435 580 870 1740 12659 25318 37977 50636 63295 75954 126590 151908 189885 253180 367111 379770 734222 759540 1101333 1468444 1835555 2202666 3671110 4405332 5506665 7342220 11013330 22026660