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13665030 = 2352811621
BaseRepresentation
bin110100001000…
…001100000110
3221201020220020
4310020030012
511444240110
61204520010
7224102511
oct64101406
927636806
1013665030
117793815
1246b0006
132aa5b22
141b59d78
1512edd70
hexd08306

13665030 has 32 divisors (see below), whose sum is σ = 32933088. Its totient is φ = 3628800.

The previous prime is 13665023. The next prime is 13665053. The reversal of 13665030 is 3056631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7620 + ... + 9240.

It is an arithmetic number, because the mean of its divisors is an integer number (1029159).

Almost surely, 213665030 is an apocalyptic number.

13665030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13665030 is an abundant number, since it is smaller than the sum of its proper divisors (19268058).

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

13665030 is a wasteful number, since it uses less digits than its factorization.

13665030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 13665030 is about 3696.6241356135. The cubic root of 13665030 is about 239.0764856186.

The spelling of 13665030 in words is "thirteen million, six hundred sixty-five thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 281 562 843 1405 1621 1686 2810 3242 4215 4863 8105 8430 9726 16210 24315 48630 455501 911002 1366503 2277505 2733006 4555010 6832515 13665030