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13853380 = 2253132213
BaseRepresentation
bin110100110110…
…001011000100
3222001211021011
4310312023010
512021302010
61212532004
7225515602
oct64661304
928054234
1013853380
117902282
124781004
132b40788
141ba8872
151339a8a
hexd362c4

13853380 has 24 divisors (see below), whose sum is σ = 29198232. Its totient is φ = 5521152.

The previous prime is 13853369. The next prime is 13853393. The reversal of 13853380 is 8335831.

It can be written as a sum of positive squares in 4 ways, for example, as 1364224 + 12489156 = 1168^2 + 3534^2 .

It is a super-2 number, since 2×138533802 = 383832274848800, which contains 22 as substring.

It is an unprimeable number.

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, 5154 + ... + 7366.

It is an arithmetic number, because the mean of its divisors is an integer number (1216593).

Almost surely, 213853380 is an apocalyptic number.

13853380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13853380 is an abundant number, since it is smaller than the sum of its proper divisors (15344852).

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

13853380 is a wasteful number, since it uses less digits than its factorization.

13853380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535 (or 2533 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 13853380 is about 3722.0128962700. The cubic root of 13853380 is about 240.1699028407.

The spelling of 13853380 in words is "thirteen million, eight hundred fifty-three thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 313 626 1252 1565 2213 3130 4426 6260 8852 11065 22130 44260 692669 1385338 2770676 3463345 6926690 13853380