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13488940 = 225739239
BaseRepresentation
bin110011011101…
…001100101100
3221101022100101
4303131030230
511423121230
61201040444
7222440233
oct63351454
927338311
1013488940
117683493
124626124
132a4392a
141b11b1a
1512b6aca
hexcdd32c

13488940 has 24 divisors (see below), whose sum is σ = 28717920. Its totient is φ = 5321088.

The previous prime is 13488919. The next prime is 13488941. The reversal of 13488940 is 4988431.

It is a self number, because there is not a number n which added to its sum of digits gives 13488940.

It is not an unprimeable number, because it can be changed into a prime (13488941) 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, 3160 + ... + 6079.

It is an arithmetic number, because the mean of its divisors is an integer number (1196580).

Almost surely, 213488940 is an apocalyptic number.

13488940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13488940 is an abundant number, since it is smaller than the sum of its proper divisors (15228980).

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

13488940 is a wasteful number, since it uses less digits than its factorization.

13488940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9321 (or 9319 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 13488940 is about 3672.7292304225. The cubic root of 13488940 is about 238.0451153793.

The spelling of 13488940 in words is "thirteen million, four hundred eighty-eight thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 9239 18478 36956 46195 92390 184780 674447 1348894 2697788 3372235 6744470 13488940