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14987385 = 32573971
BaseRepresentation
bin111001001011…
…000001111001
31001012102211100
4321023001321
512314044020
61253122013
7241251000
oct71130171
931172740
1014987385
118507276
125029309
13314999a
141dc1c37
1514b0a90
hexe4b079

14987385 has 48 divisors (see below), whose sum is σ = 30326400. Its totient is φ = 6844320.

The previous prime is 14987381. The next prime is 14987417. The reversal of 14987385 is 58378941.

14987385 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 14987385 - 22 = 14987381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14987385.

It is not an unprimeable number, because it can be changed into a prime (14987381) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14950 + ... + 15920.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

Almost surely, 214987385 is an apocalyptic number.

14987385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

14987385 is an abundant number, since it is smaller than the sum of its proper divisors (15339015).

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

14987385 is an equidigital number, since it uses as much as digits as its factorization.

14987385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 986 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 14987385 is about 3871.3544141553. The cubic root of 14987385 is about 246.5520518977.

The spelling of 14987385 in words is "fourteen million, nine hundred eighty-seven thousand, three hundred eighty-five".

Divisors: 1 3 5 7 9 15 21 35 45 49 63 105 147 245 315 343 441 735 971 1029 1715 2205 2913 3087 4855 5145 6797 8739 14565 15435 20391 33985 43695 47579 61173 101955 142737 237895 305865 333053 428211 713685 999159 1665265 2141055 2997477 4995795 14987385