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13054428 = 22321073389
BaseRepresentation
bin110001110011…
…000111011100
3220120020022100
4301303013130
511320220203
61143445100
7215650362
oct61630734
926506270
1013054428
117406a92
124456790
132920c1a
141a3b632
15122cea3
hexc731dc

13054428 has 36 divisors (see below), whose sum is σ = 33316920. Its totient is φ = 4309536.

The previous prime is 13054423. The next prime is 13054429. The reversal of 13054428 is 82445031.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13054421) 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 11 ways as a sum of consecutive naturals, for example, 2158 + ... + 5546.

It is an arithmetic number, because the mean of its divisors is an integer number (925470).

Almost surely, 213054428 is an apocalyptic number.

13054428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13054428 is an abundant number, since it is smaller than the sum of its proper divisors (20262492).

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

13054428 is a wasteful number, since it uses less digits than its factorization.

13054428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506 (or 3501 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 13054428 is about 3613.0911972991. The cubic root of 13054428 is about 235.4611617291.

Adding to 13054428 its reverse (82445031), we get a palindrome (95499459).

The spelling of 13054428 in words is "thirteen million, fifty-four thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 107 214 321 428 642 963 1284 1926 3389 3852 6778 10167 13556 20334 30501 40668 61002 122004 362623 725246 1087869 1450492 2175738 3263607 4351476 6527214 13054428