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12801152 = 277213157
BaseRepresentation
bin110000110101…
…010010000000
3220002100212202
4300311102000
511234114102
61134212332
7213544100
oct60652200
926070782
1012801152
117253771
1243540a8
132862860
1419b3200
1511cce02
hexc35480

12801152 has 96 divisors (see below), whose sum is σ = 32151420. Its totient is φ = 5031936.

The previous prime is 12801127. The next prime is 12801157. The reversal of 12801152 is 25110821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11669056 + 1132096 = 3416^2 + 1064^2 .

12801152 is a modest number, since divided by 1152 gives 128 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12801157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81458 + ... + 81614.

Almost surely, 212801152 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 12801152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16075710).

12801152 is an abundant number, since it is smaller than the sum of its proper divisors (19350268).

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

12801152 is a wasteful number, since it uses less digits than its factorization.

12801152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 12801152 is about 3577.8697572718. The cubic root of 12801152 is about 233.9284364891.

Adding to 12801152 its reverse (25110821), we get a palindrome (37911973).

The spelling of 12801152 in words is "twelve million, eight hundred one thousand, one hundred fifty-two".

Divisors: 1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 91 98 104 112 128 157 182 196 208 224 314 364 392 416 448 628 637 728 784 832 896 1099 1256 1274 1456 1568 1664 2041 2198 2512 2548 2912 3136 4082 4396 5024 5096 5824 6272 7693 8164 8792 10048 10192 11648 14287 15386 16328 17584 20096 20384 28574 30772 32656 35168 40768 57148 61544 65312 70336 81536 100009 114296 123088 130624 140672 200018 228592 246176 261248 400036 457184 492352 800072 914368 984704 1600144 1828736 3200288 6400576 12801152