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13893805 = 55994639
BaseRepresentation
bin110101000000…
…000010101101
3222010212201101
4311000002231
512024100210
61213443101
7226044502
oct65000255
928125641
1013893805
11792a692
1247a0491
132b55cb3
141bb94a9
151346a3a
hexd400ad

13893805 has 8 divisors (see below), whose sum is σ = 16704000. Its totient is φ = 11094096.

The previous prime is 13893799. The next prime is 13893821. The reversal of 13893805 is 50839831.

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 13893805 - 29 = 13893293 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676 + ... + 5314.

It is an arithmetic number, because the mean of its divisors is an integer number (2088000).

Almost surely, 213893805 is an apocalyptic number.

It is an amenable number.

13893805 is a deficient number, since it is larger than the sum of its proper divisors (2810195).

13893805 is an equidigital number, since it uses as much as digits as its factorization.

13893805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 13893805 is about 3727.4394696628. The cubic root of 13893805 is about 240.4032860756.

The spelling of 13893805 in words is "thirteen million, eight hundred ninety-three thousand, eight hundred five".

Divisors: 1 5 599 2995 4639 23195 2778761 13893805