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13130888 = 231641361
BaseRepresentation
bin110010000101…
…110010001000
3220201010012012
4302011302020
511330142023
61145235052
7216416321
oct62056210
926633165
1013130888
117459481
124492a88
132949974
141a5b448
151245978
hexc85c88

13130888 has 8 divisors (see below), whose sum is σ = 24620430. Its totient is φ = 6565440.

The previous prime is 13130857. The next prime is 13130891. The reversal of 13130888 is 88803131.

It can be written as a sum of positive squares in only one way, i.e., 6770404 + 6360484 = 2602^2 + 2522^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 820673 + ... + 820688.

Almost surely, 213130888 is an apocalyptic number.

It is an amenable number.

13130888 is a deficient number, since it is larger than the sum of its proper divisors (11489542).

13130888 is a wasteful number, since it uses less digits than its factorization.

13130888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641367 (or 1641363 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 13130888 is about 3623.6567166331. The cubic root of 13130888 is about 235.9199671167.

The spelling of 13130888 in words is "thirteen million, one hundred thirty thousand, eight hundred eighty-eight".

Divisors: 1 2 4 8 1641361 3282722 6565444 13130888