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13285144 = 234313853
BaseRepresentation
bin110010101011…
…011100011000
3220222221210101
4302223130120
511400111034
61152425144
7220631125
oct62533430
926887711
1013285144
117554364
1245481b4
1329a1c42
141a9b74c
151276514
hexcab718

13285144 has 16 divisors (see below), whose sum is σ = 24973920. Its totient is φ = 6625440.

The previous prime is 13285117. The next prime is 13285147. The reversal of 13285144 is 44158231.

13285144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×132851442 = 352990102201472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13285147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522 + ... + 5374.

It is an arithmetic number, because the mean of its divisors is an integer number (1560870).

Almost surely, 213285144 is an apocalyptic number.

It is an amenable number.

13285144 is a deficient number, since it is larger than the sum of its proper divisors (11688776).

13285144 is a wasteful number, since it uses less digits than its factorization.

13285144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290 (or 4286 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 13285144 is about 3644.8791475164. The cubic root of 13285144 is about 236.8402015840.

The spelling of 13285144 in words is "thirteen million, two hundred eighty-five thousand, one hundred forty-four".

Divisors: 1 2 4 8 431 862 1724 3448 3853 7706 15412 30824 1660643 3321286 6642572 13285144