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13969935 = 335714783
BaseRepresentation
bin110101010010…
…101000001111
3222021202011000
4311102220033
512034014220
61215231343
7226512450
oct65225017
928252130
1013969935
117981901
124818553
132b81845
141bd9127
15135e390
hexd52a0f

13969935 has 32 divisors (see below), whose sum is σ = 28385280. Its totient is φ = 6385824.

The previous prime is 13969927. The next prime is 13969973. The reversal of 13969935 is 53996931.

13969935 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 not a de Polignac number, because 13969935 - 23 = 13969927 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6447 + ... + 8336.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 213969935 is an apocalyptic number.

13969935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13969935 is an abundant number, since it is smaller than the sum of its proper divisors (14415345).

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

13969935 is a wasteful number, since it uses less digits than its factorization.

13969935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804 (or 14798 counting only the distinct ones).

The product of its digits is 196830, while the sum is 45.

The square root of 13969935 is about 3737.6376228843. The cubic root of 13969935 is about 240.8415767530.

The spelling of 13969935 in words is "thirteen million, nine hundred sixty-nine thousand, nine hundred thirty-five".

Divisors: 1 3 5 7 9 15 21 27 35 45 63 105 135 189 315 945 14783 44349 73915 103481 133047 221745 310443 399141 517405 665235 931329 1552215 1995705 2793987 4656645 13969935