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13250140 = 2251738971
BaseRepresentation
bin110010100010…
…111001011100
3220221011202221
4302202321130
511343001030
61151555124
7220424101
oct62427134
926834687
1013250140
117530032
12452baa4
13298c027
141a8caa8
15126ae7a
hexca2e5c

13250140 has 24 divisors (see below), whose sum is σ = 29462832. Its totient is φ = 4988160.

The previous prime is 13250137. The next prime is 13250141. The reversal of 13250140 is 4105231.

13250140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13250141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19146 + ... + 19825.

It is an arithmetic number, because the mean of its divisors is an integer number (1227618).

Almost surely, 213250140 is an apocalyptic number.

13250140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13250140 is an abundant number, since it is smaller than the sum of its proper divisors (16212692).

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

13250140 is a wasteful number, since it uses less digits than its factorization.

13250140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38997 (or 38995 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 13250140 is about 3640.0741750684. The cubic root of 13250140 is about 236.6320079732.

Adding to 13250140 its reverse (4105231), we get a palindrome (17355371).

The spelling of 13250140 in words is "thirteen million, two hundred fifty thousand, one hundred forty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 38971 77942 155884 194855 389710 662507 779420 1325014 2650028 3312535 6625070 13250140