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28313675 = 521387119
BaseRepresentation
bin110110000000…
…0100001001011
31222021111001122
41230000201023
524222014200
62450505455
7462443105
oct154004113
958244048
1028313675
1114a89535
12959528b
135b34570
143a90575
152744385
hex1b0084b

28313675 has 12 divisors (see below), whose sum is σ = 37810080. Its totient is φ = 20908320.

The previous prime is 28313671. The next prime is 28313717. The reversal of 28313675 is 57631382.

It is not a de Polignac number, because 28313675 - 22 = 28313671 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28313671) 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, 43235 + ... + 43884.

It is an arithmetic number, because the mean of its divisors is an integer number (3150840).

Almost surely, 228313675 is an apocalyptic number.

28313675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28313675 is a deficient number, since it is larger than the sum of its proper divisors (9496405).

28313675 is a wasteful number, since it uses less digits than its factorization.

28313675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87142 (or 87137 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 28313675 is about 5321.0595749343. The cubic root of 28313675 is about 304.7886199977.

The spelling of 28313675 in words is "twenty-eight million, three hundred thirteen thousand, six hundred seventy-five".

Divisors: 1 5 13 25 65 325 87119 435595 1132547 2177975 5662735 28313675