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28384862 = 2114392939
BaseRepresentation
bin110110001000…
…1111001011110
31222102002201012
41230101321132
524231303422
62452215222
7463160462
oct154217136
958362635
1028384862
1115027a70
12960a512
135b5aa9c
143aac4a2
15275a4e2
hex1b11e5e

28384862 has 16 divisors (see below), whose sum is σ = 46569600. Its totient is φ = 12868440.

The previous prime is 28384861. The next prime is 28384897. The reversal of 28384862 is 26848382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28384861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8189 + ... + 11127.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 228384862 is an apocalyptic number.

28384862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28384862 is a deficient number, since it is larger than the sum of its proper divisors (18184738).

28384862 is a wasteful number, since it uses less digits than its factorization.

28384862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391.

The product of its digits is 147456, while the sum is 41.

The square root of 28384862 is about 5327.7445509333. The cubic root of 28384862 is about 305.0438421255.

The spelling of 28384862 in words is "twenty-eight million, three hundred eighty-four thousand, eight hundred sixty-two".

Divisors: 1 2 11 22 439 878 2939 4829 5878 9658 32329 64658 1290221 2580442 14192431 28384862