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13986692454 = 2371607320719
BaseRepresentation
bin11010000011010101…
…11111110101100110
31100002202102121001110
431001222333311212
5212121043124304
610231515205450
71003413632010
oct150152776546
940082377043
1013986692454
115a2813a069
122864146886
13141b92c9a7
149698111b0
1556cda5289
hex341abfd66

13986692454 has 32 divisors (see below), whose sum is σ = 31973114880. Its totient is φ = 3995756352.

The previous prime is 13986692443. The next prime is 13986692477. The reversal of 13986692454 is 45429668931.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13986692394 and 13986692403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 664707 + ... + 685425.

It is an arithmetic number, because the mean of its divisors is an integer number (999159840).

Almost surely, 213986692454 is an apocalyptic number.

13986692454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13986692454 is an abundant number, since it is smaller than the sum of its proper divisors (17986422426).

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

13986692454 is a wasteful number, since it uses less digits than its factorization.

13986692454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36804.

The product of its digits is 11197440, while the sum is 57.

The spelling of 13986692454 in words is "thirteen billion, nine hundred eighty-six million, six hundred ninety-two thousand, four hundred fifty-four".

Divisors: 1 2 3 6 7 14 21 42 16073 20719 32146 41438 48219 62157 96438 112511 124314 145033 225022 290066 337533 435099 675066 870198 333016487 666032974 999049461 1998098922 2331115409 4662230818 6993346227 13986692454