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13452140 = 22513311669
BaseRepresentation
bin110011010100…
…001101101100
3221022102212102
4303110031230
511420432030
61200154232
7222225032
oct63241554
927272772
1013452140
117658879
124608978
132a2cc60
141b02552
1512aac45
hexcd436c

13452140 has 48 divisors (see below), whose sum is σ = 31422720. Its totient is φ = 4803840.

The previous prime is 13452139. The next prime is 13452161. The reversal of 13452140 is 4125431.

13452140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7226 + ... + 8894.

It is an arithmetic number, because the mean of its divisors is an integer number (654640).

Almost surely, 213452140 is an apocalyptic number.

13452140 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 13452140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15711360).

13452140 is an abundant number, since it is smaller than the sum of its proper divisors (17970580).

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

13452140 is a wasteful number, since it uses less digits than its factorization.

13452140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722 (or 1720 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 13452140 is about 3667.7159104816. The cubic root of 13452140 is about 237.8284430876.

Adding to 13452140 its reverse (4125431), we get a palindrome (17577571).

It can be divided in two parts, 134521 and 40, that multiplied together give a triangular number (5380840 = T3280).

The spelling of 13452140 in words is "thirteen million, four hundred fifty-two thousand, one hundred forty".

Divisors: 1 2 4 5 10 13 20 26 31 52 62 65 124 130 155 260 310 403 620 806 1612 1669 2015 3338 4030 6676 8060 8345 16690 21697 33380 43394 51739 86788 103478 108485 206956 216970 258695 433940 517390 672607 1034780 1345214 2690428 3363035 6726070 13452140