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14987910 = 2357149479
BaseRepresentation
bin111001001011…
…001010000110
31001012110112210
4321023022012
512314103120
61253124250
7241252350
oct71131206
931173483
1014987910
118507703
125029686
133149cb2
141dc20d0
1514b0ce0
hexe4b286

14987910 has 64 divisors (see below), whose sum is σ = 41472000. Its totient is φ = 3395712.

The previous prime is 14987909. The next prime is 14987933. The reversal of 14987910 is 1978941.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 31051 + ... + 31529.

It is an arithmetic number, because the mean of its divisors is an integer number (648000).

Almost surely, 214987910 is an apocalyptic number.

14987910 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 14987910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20736000).

14987910 is an abundant number, since it is smaller than the sum of its proper divisors (26484090).

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

14987910 is a wasteful number, since it uses less digits than its factorization.

14987910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 14987910 is about 3871.4222192884. The cubic root of 14987910 is about 246.5549307258.

The spelling of 14987910 in words is "fourteen million, nine hundred eighty-seven thousand, nine hundred ten".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 149 210 298 447 479 745 894 958 1043 1437 1490 2086 2235 2395 2874 3129 3353 4470 4790 5215 6258 6706 7185 10059 10430 14370 15645 16765 20118 31290 33530 50295 71371 100590 142742 214113 356855 428226 499597 713710 999194 1070565 1498791 2141130 2497985 2997582 4995970 7493955 14987910