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13042750 = 253729257
BaseRepresentation
bin110001110000…
…010000111110
3220112122021211
4301300100332
511314332000
61143315034
7215601340
oct61602076
926478254
1013042750
1173a9236
12444ba7a
132918806
141a37290
1512297ba
hexc7043e

13042750 has 64 divisors (see below), whose sum is σ = 28978560. Its totient is φ = 4300800.

The previous prime is 13042727. The next prime is 13042751. The reversal of 13042750 is 5724031.

It is a super-2 number, since 2×130427502 = 340226655125000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042751) 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 31 ways as a sum of consecutive naturals, for example, 50622 + ... + 50878.

It is an arithmetic number, because the mean of its divisors is an integer number (452790).

Almost surely, 213042750 is an apocalyptic number.

13042750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13042750 is an abundant number, since it is smaller than the sum of its proper divisors (15935810).

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

13042750 is a wasteful number, since it uses less digits than its factorization.

13042750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 13042750 is about 3611.4747680138. The cubic root of 13042750 is about 235.3909292179.

Adding to 13042750 its reverse (5724031), we get a palindrome (18766781).

The spelling of 13042750 in words is "thirteen million, forty-two thousand, seven hundred fifty".

Divisors: 1 2 5 7 10 14 25 29 35 50 58 70 125 145 175 203 250 257 290 350 406 514 725 875 1015 1285 1450 1750 1799 2030 2570 3598 3625 5075 6425 7250 7453 8995 10150 12850 14906 17990 25375 32125 37265 44975 50750 52171 64250 74530 89950 104342 186325 224875 260855 372650 449750 521710 931625 1304275 1863250 2608550 6521375 13042750