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13160028 = 2237222381
BaseRepresentation
bin110010001100…
…111001011100
3220202121011110
4302030321130
511332110103
61150022020
7216600300
oct62147134
926677143
1013160028
117479362
1244a7910
132959ccb
141a67d00
15124e403
hexc8ce5c

13160028 has 36 divisors (see below), whose sum is σ = 35721672. Its totient is φ = 3759840.

The previous prime is 13159999. The next prime is 13160029. The reversal of 13160028 is 82006131.

13160028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 13159986 and 13160013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13160029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10603 + ... + 11778.

Almost surely, 213160028 is an apocalyptic number.

It is an amenable number.

13160028 is an abundant number, since it is smaller than the sum of its proper divisors (22561644).

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

13160028 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (13160027) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (22393).

13160028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22402 (or 22393 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 13160028 is about 3627.6752886663. The cubic root of 13160028 is about 236.0943556440.

Adding to 13160028 its reverse (82006131), we get a palindrome (95166159).

The spelling of 13160028 in words is "thirteen million, one hundred sixty thousand, twenty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 22381 44762 67143 89524 134286 156667 268572 313334 470001 626668 940002 1096669 1880004 2193338 3290007 4386676 6580014 13160028