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13423044 = 22319113521
BaseRepresentation
bin110011001101…
…000111000100
3221020221221210
4303031013010
511414014134
61155411420
7222044145
oct63150704
927227853
1013423044
117638a28
1245b3b70
132a1c93b
141ad5acc
1512a22e9
hexccd1c4

13423044 has 48 divisors (see below), whose sum is σ = 33324480. Its totient is φ = 4193280.

The previous prime is 13423019. The next prime is 13423051. The reversal of 13423044 is 44032431.

It is a super-2 number, since 2×134230442 = 360356220451872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13423044.

It is a congruent number.

It is an unprimeable number.

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, 25504 + ... + 26024.

It is an arithmetic number, because the mean of its divisors is an integer number (694260).

Almost surely, 213423044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13423044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16662240).

13423044 is an abundant number, since it is smaller than the sum of its proper divisors (19901436).

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

13423044 is a wasteful number, since it uses less digits than its factorization.

13423044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 13423044 is about 3663.7472620256. The cubic root of 13423044 is about 237.6568507751.

Adding to 13423044 its reverse (44032431), we get a palindrome (57455475).

The spelling of 13423044 in words is "thirteen million, four hundred twenty-three thousand, forty-four".

Divisors: 1 2 3 4 6 12 19 38 57 76 113 114 226 228 339 452 521 678 1042 1356 1563 2084 2147 3126 4294 6252 6441 8588 9899 12882 19798 25764 29697 39596 58873 59394 117746 118788 176619 235492 353238 706476 1118587 2237174 3355761 4474348 6711522 13423044