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13500048 = 243281251
BaseRepresentation
bin110011011111…
…111010010000
3221101212120210
4303133322100
511424000143
61201204120
7222514512
oct63377220
927355523
1013500048
117690871
124630640
132a489c3
141b15bb2
1512ba033
hexcdfe90

13500048 has 20 divisors (see below), whose sum is σ = 34875248. Its totient is φ = 4500000.

The previous prime is 13500037. The next prime is 13500049. The reversal of 13500048 is 84000531.

It is a junction number, because it is equal to n+sod(n) for n = 13499997 and 13500033.

It is not an unprimeable number, because it can be changed into a prime (13500049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140578 + ... + 140673.

Almost surely, 213500048 is an apocalyptic number.

It is an amenable number.

13500048 is an abundant number, since it is smaller than the sum of its proper divisors (21375200).

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

13500048 is a wasteful number, since it uses less digits than its factorization.

13500048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281262 (or 281256 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 13500048 is about 3674.2411461416. The cubic root of 13500048 is about 238.1104399995.

Adding to 13500048 its reverse (84000531), we get a palindrome (97500579).

The spelling of 13500048 in words is "thirteen million, five hundred thousand, forty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 281251 562502 843753 1125004 1687506 2250008 3375012 4500016 6750024 13500048