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13885087 = 431372357
BaseRepresentation
bin110100111101…
…111010011111
3222010102202111
4310331322133
512023310322
61213334451
7226010206
oct64757237
928112674
1013885087
117924087
124797427
132b52038
141bb623d
151344177
hexd3de9f

13885087 has 8 divisors (see below), whose sum is σ = 14317776. Its totient is φ = 13457472.

The previous prime is 13885061. The next prime is 13885097. The reversal of 13885087 is 78058831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13885087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13885097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4713 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (1789722).

Almost surely, 213885087 is an apocalyptic number.

13885087 is the 2357-th heptagonal number.

13885087 is a deficient number, since it is larger than the sum of its proper divisors (432689).

13885087 is a wasteful number, since it uses less digits than its factorization.

13885087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537.

The product of its (nonzero) digits is 53760, while the sum is 40.

The square root of 13885087 is about 3726.2698506684. The cubic root of 13885087 is about 240.3529932925.

The spelling of 13885087 in words is "thirteen million, eight hundred eighty-five thousand, eighty-seven".

Divisors: 1 43 137 2357 5891 101351 322909 13885087