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13804215 = 35920281
BaseRepresentation
bin110100101010…
…001010110111
3221222022211020
4310222022313
512013213330
61211512223
7225222345
oct64521267
927868736
1013804215
117879347
124758673
132b24299
141b94995
15132a210
hexd2a2b7

13804215 has 8 divisors (see below), whose sum is σ = 22086768. Its totient is φ = 7362240.

The previous prime is 13804213. The next prime is 13804237. The reversal of 13804215 is 51240831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13804215 - 21 = 13804213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13804213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 460126 + ... + 460155.

It is an arithmetic number, because the mean of its divisors is an integer number (2760846).

Almost surely, 213804215 is an apocalyptic number.

13804215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13804215 is a deficient number, since it is larger than the sum of its proper divisors (8282553).

13804215 is an equidigital number, since it uses as much as digits as its factorization.

13804215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920289.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 13804215 is about 3715.4024008174. The cubic root of 13804215 is about 239.8854488060.

The spelling of 13804215 in words is "thirteen million, eight hundred four thousand, two hundred fifteen".

Divisors: 1 3 5 15 920281 2760843 4601405 13804215