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12213030 = 2351572593
BaseRepresentation
bin101110100101…
…101100100110
3211222111010110
4232211230212
511111304110
61113433450
7205544334
oct56455446
924874113
1012213030
116991915
12410b886
1326b7c5b
14189cb54
151113a20
hexba5b26

12213030 has 32 divisors (see below), whose sum is σ = 29509344. Its totient is φ = 3234816.

The previous prime is 12213017. The next prime is 12213037. The reversal of 12213030 is 3031221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12212997 and 12213015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12213037) 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 15 ways as a sum of consecutive naturals, for example, 3414 + ... + 6006.

It is an arithmetic number, because the mean of its divisors is an integer number (922167).

Almost surely, 212213030 is an apocalyptic number.

12213030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12213030 is an abundant number, since it is smaller than the sum of its proper divisors (17296314).

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

12213030 is a wasteful number, since it uses less digits than its factorization.

12213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12213030 is about 3494.7145806203. The cubic root of 12213030 is about 230.2896791118.

Adding to 12213030 its reverse (3031221), we get a palindrome (15244251).

The spelling of 12213030 in words is "twelve million, two hundred thirteen thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 157 314 471 785 942 1570 2355 2593 4710 5186 7779 12965 15558 25930 38895 77790 407101 814202 1221303 2035505 2442606 4071010 6106515 12213030