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13142550 = 2352412137
BaseRepresentation
bin110010001000…
…101000010110
3220201201012010
4302020220112
511331030200
61145405050
7216465321
oct62105026
926651163
1013142550
117467213
124499786
132952075
141a617b8
151249150
hexc88a16

13142550 has 48 divisors (see below), whose sum is σ = 33404112. Its totient is φ = 3417600.

The previous prime is 13142537. The next prime is 13142551. The reversal of 13142550 is 5524131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5082 + ... + 7218.

It is an arithmetic number, because the mean of its divisors is an integer number (695919).

Almost surely, 213142550 is an apocalyptic number.

13142550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13142550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16702056).

13142550 is an abundant number, since it is smaller than the sum of its proper divisors (20261562).

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

13142550 is a wasteful number, since it uses less digits than its factorization.

13142550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2188 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 13142550 is about 3625.2655075180. The cubic root of 13142550 is about 235.9897893696.

Adding to 13142550 its reverse (5524131), we get a palindrome (18666681).

The spelling of 13142550 in words is "thirteen million, one hundred forty-two thousand, five hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 41 50 75 82 123 150 205 246 410 615 1025 1230 2050 2137 3075 4274 6150 6411 10685 12822 21370 32055 53425 64110 87617 106850 160275 175234 262851 320550 438085 525702 876170 1314255 2190425 2628510 4380850 6571275 13142550