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28472 = 233559
BaseRepresentation
bin110111100111000
31110001112
412330320
51402342
6335452
7146003
oct67470
943045
1028472
111a434
1214588
13cc62
14a53a
158682
hex6f38

28472 has 8 divisors (see below), whose sum is σ = 53400. Its totient is φ = 14232.

The previous prime is 28463. The next prime is 28477. The reversal of 28472 is 27482.

Subtracting from 28472 its reverse (27482), we obtain a triangular number (990 = T44).

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

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 28472.

It is not an unprimeable number, because it can be changed into a prime (28477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1772 + ... + 1787.

It is an arithmetic number, because the mean of its divisors is an integer number (6675).

228472 is an apocalyptic number.

It is an amenable number.

28472 is a deficient number, since it is larger than the sum of its proper divisors (24928).

28472 is a wasteful number, since it uses less digits than its factorization.

28472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565 (or 3561 counting only the distinct ones).

The product of its digits is 896, while the sum is 23.

The square root of 28472 is about 168.7364809400. The cubic root of 28472 is about 30.5355672149.

The spelling of 28472 in words is "twenty-eight thousand, four hundred seventy-two".

Divisors: 1 2 4 8 3559 7118 14236 28472