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14987870 = 255328279
BaseRepresentation
bin111001001011…
…001001011110
31001012110111022
4321023021132
512314102440
61253124142
7241252262
oct71131136
931173438
1014987870
118507677
125029652
133149c81
141dc20a2
1514b0cb5
hexe4b25e

14987870 has 16 divisors (see below), whose sum is σ = 27488160. Its totient is φ = 5881824.

The previous prime is 14987857. The next prime is 14987879. The reversal of 14987870 is 7878941.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14987879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13610 + ... + 14669.

It is an arithmetic number, because the mean of its divisors is an integer number (1718010).

Almost surely, 214987870 is an apocalyptic number.

14987870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

14987870 is a deficient number, since it is larger than the sum of its proper divisors (12500290).

14987870 is a wasteful number, since it uses less digits than its factorization.

14987870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28339.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 14987870 is about 3871.4170532248. The cubic root of 14987870 is about 246.5547113889.

The spelling of 14987870 in words is "fourteen million, nine hundred eighty-seven thousand, eight hundred seventy".

Divisors: 1 2 5 10 53 106 265 530 28279 56558 141395 282790 1498787 2997574 7493935 14987870