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13488140 = 2251739671
BaseRepresentation
bin110011011101…
…000000001100
3221101021020202
4303131000030
511423110030
61201033032
7222435011
oct63350014
927337222
1013488140
117682926
124625778
132a43463
141b11708
1512b6745
hexcdd00c

13488140 has 24 divisors (see below), whose sum is σ = 29992032. Its totient is φ = 5077760.

The previous prime is 13488127. The next prime is 13488149. The reversal of 13488140 is 4188431.

It is not an unprimeable number, because it can be changed into a prime (13488149) 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, 19496 + ... + 20175.

It is an arithmetic number, because the mean of its divisors is an integer number (1249668).

Almost surely, 213488140 is an apocalyptic number.

13488140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13488140 is an abundant number, since it is smaller than the sum of its proper divisors (16503892).

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

13488140 is a wasteful number, since it uses less digits than its factorization.

13488140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39697 (or 39695 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 13488140 is about 3672.6203179746. The cubic root of 13488140 is about 238.0404093051.

The spelling of 13488140 in words is "thirteen million, four hundred eighty-eight thousand, one hundred forty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 39671 79342 158684 198355 396710 674407 793420 1348814 2697628 3372035 6744070 13488140