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13906648 = 2371032411
BaseRepresentation
bin110101000011…
…001011011000
3222011112100001
4311003023120
512030003043
61214022344
7226130110
oct65031330
928145301
1013906648
1179392a8
1247a79b4
132b5bab2
141bc0040
15134a74d
hexd432d8

13906648 has 32 divisors (see below), whose sum is σ = 30101760. Its totient is φ = 5899680.

The previous prime is 13906643. The next prime is 13906649. The reversal of 13906648 is 84660931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13906643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4563 + ... + 6973.

It is an arithmetic number, because the mean of its divisors is an integer number (940680).

Almost surely, 213906648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13906648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15050880).

13906648 is an abundant number, since it is smaller than the sum of its proper divisors (16195112).

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

13906648 is a wasteful number, since it uses less digits than its factorization.

13906648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527 (or 2523 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 13906648 is about 3729.1618361235. The cubic root of 13906648 is about 240.4773370300.

The spelling of 13906648 in words is "thirteen million, nine hundred six thousand, six hundred forty-eight".

Divisors: 1 2 4 7 8 14 28 56 103 206 412 721 824 1442 2411 2884 4822 5768 9644 16877 19288 33754 67508 135016 248333 496666 993332 1738331 1986664 3476662 6953324 13906648