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13708845 = 3653761
BaseRepresentation
bin110100010010…
…111000101101
3221210111000000
4310102320231
512002140340
61205454513
7224344323
oct64227055
927714000
1013708845
117813727
124711439
132abca57
141b6bd13
15130bd30
hexd12e2d

13708845 has 28 divisors (see below), whose sum is σ = 24671196. Its totient is φ = 7309440.

The previous prime is 13708843. The next prime is 13708847. The reversal of 13708845 is 54880731.

13708845 is digitally balanced in base 2 and base 4, because in such bases 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 (13708843) and next prime (13708847).

It can be written as a sum of positive squares in 2 ways, for example, as 5517801 + 8191044 = 2349^2 + 2862^2 .

It is not a de Polignac number, because 13708845 - 21 = 13708843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13708841) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1765 + ... + 5525.

Almost surely, 213708845 is an apocalyptic number.

13708845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13708845 is a deficient number, since it is larger than the sum of its proper divisors (10962351).

13708845 is an frugal number, since it uses more digits than its factorization.

13708845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 13708845 is about 3702.5457458349. The cubic root of 13708845 is about 239.3317347334.

The spelling of 13708845 in words is "thirteen million, seven hundred eight thousand, eight hundred forty-five".

Divisors: 1 3 5 9 15 27 45 81 135 243 405 729 1215 3645 3761 11283 18805 33849 56415 101547 169245 304641 507735 913923 1523205 2741769 4569615 13708845