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12903488 = 261321193
BaseRepresentation
bin110001001110…
…010001000000
3220021120020222
4301032101000
511300402423
61140322212
7214451333
oct61162100
926246228
1012903488
117313644
1243a3368
13289a300
1419dc61a
1511ed3c8
hexc4e440

12903488 has 42 divisors (see below), whose sum is σ = 27749754. Its totient is φ = 5950464.

The previous prime is 12903481. The next prime is 12903497. The reversal of 12903488 is 88430921.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1024 + 12902464 = 32^2 + 3592^2 .

It is a super-2 number, since 2×129034882 = 333000005132288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12903481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10220 + ... + 11412.

Almost surely, 212903488 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 12903488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13874877).

12903488 is an abundant number, since it is smaller than the sum of its proper divisors (14846266).

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

12903488 is a wasteful number, since it uses less digits than its factorization.

12903488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 12903488 is about 3592.1425361475. The cubic root of 12903488 is about 234.5501458946.

The spelling of 12903488 in words is "twelve million, nine hundred three thousand, four hundred eighty-eight".

Divisors: 1 2 4 8 13 16 26 32 52 64 104 169 208 338 416 676 832 1193 1352 2386 2704 4772 5408 9544 10816 15509 19088 31018 38176 62036 76352 124072 201617 248144 403234 496288 806468 992576 1612936 3225872 6451744 12903488