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13809054 = 237328787
BaseRepresentation
bin110100101011…
…010110011110
3221222120110110
4310223112132
512013342204
61211550450
7225242430
oct64532636
927876413
1013809054
117881a46
12475b426
132b2654c
141b96650
15132b889
hexd2b59e

13809054 has 16 divisors (see below), whose sum is σ = 31563648. Its totient is φ = 3945432.

The previous prime is 13809053. The next prime is 13809071. The reversal of 13809054 is 45090831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13809053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164352 + ... + 164435.

It is an arithmetic number, because the mean of its divisors is an integer number (1972728).

Almost surely, 213809054 is an apocalyptic number.

13809054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13809054 is an abundant number, since it is smaller than the sum of its proper divisors (17754594).

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

13809054 is a wasteful number, since it uses less digits than its factorization.

13809054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328799.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 13809054 is about 3716.0535518208. The cubic root of 13809054 is about 239.9134757547.

Adding to 13809054 its reverse (45090831), we get a palindrome (58899885).

The spelling of 13809054 in words is "thirteen million, eight hundred nine thousand, fifty-four".

Divisors: 1 2 3 6 7 14 21 42 328787 657574 986361 1972722 2301509 4603018 6904527 13809054