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13908930 = 2357107619
BaseRepresentation
bin110101000011…
…101111000010
3222011122110120
4311003233002
512030041210
61214041110
7226136550
oct65035702
928148416
1013908930
11793aa92
1247a9196
132b5cb49
141bc0bd0
15134b270
hexd43bc2

13908930 has 64 divisors (see below), whose sum is σ = 38568960. Its totient is φ = 3144384.

The previous prime is 13908919. The next prime is 13908959. The reversal of 13908930 is 3980931.

13908930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13908891 and 13908900.

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, 22161 + ... + 22779.

It is an arithmetic number, because the mean of its divisors is an integer number (602640).

Almost surely, 213908930 is an apocalyptic number.

13908930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13908930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19284480).

13908930 is an abundant number, since it is smaller than the sum of its proper divisors (24660030).

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

13908930 is a wasteful number, since it uses less digits than its factorization.

13908930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 13908930 is about 3729.4677904495. The cubic root of 13908930 is about 240.4904899544.

The spelling of 13908930 in words is "thirteen million, nine hundred eight thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 107 210 214 321 535 619 642 749 1070 1238 1498 1605 1857 2247 3095 3210 3714 3745 4333 4494 6190 7490 8666 9285 11235 12999 18570 21665 22470 25998 43330 64995 66233 129990 132466 198699 331165 397398 463631 662330 927262 993495 1390893 1986990 2318155 2781786 4636310 6954465 13908930