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13125020 = 2251738603
BaseRepresentation
bin110010000100…
…010110011100
3220200211010212
4302010112130
511330000040
61145151552
7216363236
oct62042634
926624125
1013125020
117455027
12448b5b8
1329470ac
141a59256
151243d65
hexc8459c

13125020 has 24 divisors (see below), whose sum is σ = 29184624. Its totient is φ = 4941056.

The previous prime is 13125001. The next prime is 13125053. The reversal of 13125020 is 2052131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13124986 and 13125004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18962 + ... + 19641.

It is an arithmetic number, because the mean of its divisors is an integer number (1216026).

Almost surely, 213125020 is an apocalyptic number.

13125020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13125020 is an abundant number, since it is smaller than the sum of its proper divisors (16059604).

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

13125020 is a wasteful number, since it uses less digits than its factorization.

13125020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38629 (or 38627 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 13125020 is about 3622.8469468085. The cubic root of 13125020 is about 235.8848188302.

Adding to 13125020 its reverse (2052131), we get a palindrome (15177151).

The spelling of 13125020 in words is "thirteen million, one hundred twenty-five thousand, twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 38603 77206 154412 193015 386030 656251 772060 1312502 2625004 3281255 6562510 13125020