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12239648 = 251941491
BaseRepresentation
bin101110101100…
…001100100000
3212000211122022
4232230030200
511113132043
61114201012
7206015051
oct56541440
925024568
1012239648
1169aa913
124123168
1326c70c5
1418a8728
15111b868
hexbac320

12239648 has 48 divisors (see below), whose sum is σ = 26036640. Its totient is φ = 5644800.

The previous prime is 12239641. The next prime is 12239651. The reversal of 12239648 is 84693221.

It is a super-3 number, since 3×122396483 (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12239641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24683 + ... + 25173.

It is an arithmetic number, because the mean of its divisors is an integer number (542430).

Almost surely, 212239648 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 12239648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13018320).

12239648 is an abundant number, since it is smaller than the sum of its proper divisors (13796992).

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

12239648 is a wasteful number, since it uses less digits than its factorization.

12239648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 553 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 12239648 is about 3498.5208302939. The cubic root of 12239648 is about 230.4568612873.

The spelling of 12239648 in words is "twelve million, two hundred thirty-nine thousand, six hundred forty-eight".

Divisors: 1 2 4 8 16 19 32 38 41 76 82 152 164 304 328 491 608 656 779 982 1312 1558 1964 3116 3928 6232 7856 9329 12464 15712 18658 20131 24928 37316 40262 74632 80524 149264 161048 298528 322096 382489 644192 764978 1529956 3059912 6119824 12239648