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13768305 = 35917887
BaseRepresentation
bin110100100001…
…011001110001
3221220111120020
4310201121301
512011041210
61211034053
7225012555
oct64413161
927814506
1013768305
117854371
12473b929
132b10b35
141b85865
15131e770
hexd21671

13768305 has 8 divisors (see below), whose sum is σ = 22029312. Its totient is φ = 7343088.

The previous prime is 13768303. The next prime is 13768343. The reversal of 13768305 is 50386731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13768305 - 21 = 13768303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13768303) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 458929 + ... + 458958.

It is an arithmetic number, because the mean of its divisors is an integer number (2753664).

Almost surely, 213768305 is an apocalyptic number.

13768305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13768305 is a deficient number, since it is larger than the sum of its proper divisors (8261007).

13768305 is an equidigital number, since it uses as much as digits as its factorization.

13768305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917895.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 13768305 is about 3710.5666683136. The cubic root of 13768305 is about 239.6772571545.

The spelling of 13768305 in words is "thirteen million, seven hundred sixty-eight thousand, three hundred five".

Divisors: 1 3 5 15 917887 2753661 4589435 13768305