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13813807 = 710718443
BaseRepresentation
bin110100101100…
…100000101111
3221222210222111
4310230200233
512014020212
61212024451
7225262330
oct64544057
927883874
1013813807
117885577
124762127
132b28767
141b98287
15132cea7
hexd2c82f

13813807 has 8 divisors (see below), whose sum is σ = 15935616. Its totient is φ = 11729112.

The previous prime is 13813801. The next prime is 13813829. The reversal of 13813807 is 70831831.

13813807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13813807 - 23 = 13813799 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 (13813801) 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, 8473 + ... + 9970.

It is an arithmetic number, because the mean of its divisors is an integer number (1991952).

Almost surely, 213813807 is an apocalyptic number.

13813807 is a deficient number, since it is larger than the sum of its proper divisors (2121809).

13813807 is a wasteful number, since it uses less digits than its factorization.

13813807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18557.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 13813807 is about 3716.6930193386. The cubic root of 13813807 is about 239.9409982276.

The spelling of 13813807 in words is "thirteen million, eight hundred thirteen thousand, eight hundred seven".

Divisors: 1 7 107 749 18443 129101 1973401 13813807