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13803750 = 23354409
BaseRepresentation
bin110100101010…
…000011100110
3221222022012000
4310222003212
512013210000
61211510130
7225221112
oct64520346
927868160
1013803750
117878a64
124758346
132b23ccc
141b94742
15132a000
hexd2a0e6

13803750 has 80 divisors (see below), whose sum is σ = 38425200. Its totient is φ = 3672000.

The previous prime is 13803743. The next prime is 13803793. The reversal of 13803750 is 5730831.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 33546 + ... + 33954.

It is an arithmetic number, because the mean of its divisors is an integer number (480315).

Almost surely, 213803750 is an apocalyptic number.

13803750 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 13803750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19212600).

13803750 is an abundant number, since it is smaller than the sum of its proper divisors (24621450).

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

13803750 is an equidigital number, since it uses as much as digits as its factorization.

13803750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 13803750 is about 3715.3398229503. The cubic root of 13803750 is about 239.8827552329.

The spelling of 13803750 in words is "thirteen million, eight hundred three thousand, seven hundred fifty".

Divisors: 1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 75 90 125 135 150 225 250 270 375 409 450 625 675 750 818 1125 1227 1250 1350 1875 2045 2250 2454 3375 3681 3750 4090 5625 6135 6750 7362 10225 11043 11250 12270 16875 18405 20450 22086 30675 33750 36810 51125 55215 61350 92025 102250 110430 153375 184050 255625 276075 306750 460125 511250 552150 766875 920250 1380375 1533750 2300625 2760750 4601250 6901875 13803750