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13452500 = 22545381
BaseRepresentation
bin110011010100…
…010011010100
3221022110100202
4303110103110
511420440000
61200200032
7222226055
oct63242324
927273322
1013452500
117659076
124609018
132a30179
141b0272c
1512aadd5
hexcd44d4

13452500 has 30 divisors (see below), whose sum is σ = 29423394. Its totient is φ = 5380000.

The previous prime is 13452499. The next prime is 13452503. The reversal of 13452500 is 525431.

It can be written as a sum of positive squares in 5 ways, for example, as 6461764 + 6990736 = 2542^2 + 2644^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13452503) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 191 + ... + 5190.

Almost surely, 213452500 is an apocalyptic number.

13452500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13452500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14711697).

13452500 is an abundant number, since it is smaller than the sum of its proper divisors (15970894).

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

13452500 is an equidigital number, since it uses as much as digits as its factorization.

13452500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405 (or 5388 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 13452500 is about 3667.7649870187. The cubic root of 13452500 is about 237.8305646206.

Adding to 13452500 its reverse (525431), we get a palindrome (13977931).

The spelling of 13452500 in words is "thirteen million, four hundred fifty-two thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1250 2500 5381 10762 21524 26905 53810 107620 134525 269050 538100 672625 1345250 2690500 3363125 6726250 13452500