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13818030 = 2353171453
BaseRepresentation
bin110100101101…
…100010101110
3222000000202220
4310231202232
512014134110
61212100210
7225310542
oct64554256
928000686
1013818030
117888766
124764666
132b2a665
141b99a22
15132e370
hexd2d8ae

13818030 has 32 divisors (see below), whose sum is σ = 33290784. Its totient is φ = 3670656.

The previous prime is 13818023. The next prime is 13818043. The reversal of 13818030 is 3081831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8784 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (1040337).

Almost surely, 213818030 is an apocalyptic number.

13818030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13818030 is an abundant number, since it is smaller than the sum of its proper divisors (19472754).

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

13818030 is a wasteful number, since it uses less digits than its factorization.

13818030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 13818030 is about 3717.2610884897. The cubic root of 13818030 is about 239.9654464143.

Adding to 13818030 its reverse (3081831), we get a palindrome (16899861).

The spelling of 13818030 in words is "thirteen million, eight hundred eighteen thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 317 634 951 1453 1585 1902 2906 3170 4359 4755 7265 8718 9510 14530 21795 43590 460601 921202 1381803 2303005 2763606 4606010 6909015 13818030