Search a number
-
+
28484808 = 23311107897
BaseRepresentation
bin110110010101…
…0010011001000
31222121011210220
41230222103020
524243003213
62454310040
7464055042
oct154522310
958534726
1028484808
1115096070
129658320
135b94421
143ad6a92
152779e23
hex1b2a4c8

28484808 has 32 divisors (see below), whose sum is σ = 77686560. Its totient is φ = 8631680.

The previous prime is 28484803. The next prime is 28484831. The reversal of 28484808 is 80848482.

It is a super-2 number, since 2×284848082 = 1622768573593728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28484808.

It is not an unprimeable number, because it can be changed into a prime (28484803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53685 + ... + 54212.

It is an arithmetic number, because the mean of its divisors is an integer number (2427705).

Almost surely, 228484808 is an apocalyptic number.

It is an amenable number.

28484808 is an abundant number, since it is smaller than the sum of its proper divisors (49201752).

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

28484808 is a wasteful number, since it uses less digits than its factorization.

28484808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107917 (or 107913 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 42.

The square root of 28484808 is about 5337.1160751852. The cubic root of 28484808 is about 305.4014529064.

It can be divided in two parts, 28484 and 808, that added together give a palindrome (29292).

The spelling of 28484808 in words is "twenty-eight million, four hundred eighty-four thousand, eight hundred eight".

Divisors: 1 2 3 4 6 8 11 12 22 24 33 44 66 88 132 264 107897 215794 323691 431588 647382 863176 1186867 1294764 2373734 2589528 3560601 4747468 7121202 9494936 14242404 28484808