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13918345 = 57478461
BaseRepresentation
bin110101000110…
…000010001001
3222012010101021
4311012002021
512030341340
61214152441
7226206160
oct65060211
928163337
1013918345
117947071
1247b2721
132b6420c
141bc43d7
15134de4a
hexd46089

13918345 has 16 divisors (see below), whose sum is σ = 19496448. Its totient is φ = 9339840.

The previous prime is 13918339. The next prime is 13918351. The reversal of 13918345 is 54381931.

13918345 = T254 + T255 + ... + T463.

13918345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13918339) and next prime (13918351).

It is not a de Polignac number, because 13918345 - 23 = 13918337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13918345.

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, 2586 + ... + 5875.

It is an arithmetic number, because the mean of its divisors is an integer number (1218528).

Almost surely, 213918345 is an apocalyptic number.

It is an amenable number.

13918345 is a deficient number, since it is larger than the sum of its proper divisors (5578103).

13918345 is an equidigital number, since it uses as much as digits as its factorization.

13918345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8520.

The product of its digits is 12960, while the sum is 34.

The square root of 13918345 is about 3730.7298213620. The cubic root of 13918345 is about 240.5447406472.

The spelling of 13918345 in words is "thirteen million, nine hundred eighteen thousand, three hundred forty-five".

Divisors: 1 5 7 35 47 235 329 1645 8461 42305 59227 296135 397667 1988335 2783669 13918345