Search a number
-
+
28059080 = 2357234357
BaseRepresentation
bin110101100001…
…0010111001000
31221210112211012
41223002113020
524140342310
62441223052
7460332620
oct153022710
957715735
1028059080
1114925225
129491a88
135a7570a
143a25880
1526e3c05
hex1ac25c8

28059080 has 64 divisors (see below), whose sum is σ = 75306240. Its totient is φ = 9199872.

The previous prime is 28059077. The next prime is 28059089. The reversal of 28059080 is 8095082.

It is not an unprimeable number, because it can be changed into a prime (28059089) 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 15 ways as a sum of consecutive naturals, for example, 4262 + ... + 8618.

It is an arithmetic number, because the mean of its divisors is an integer number (1176660).

Almost surely, 228059080 is an apocalyptic number.

28059080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28059080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37653120).

28059080 is an abundant number, since it is smaller than the sum of its proper divisors (47247160).

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

28059080 is a wasteful number, since it uses less digits than its factorization.

28059080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398 (or 4394 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 28059080 is about 5297.0822157108. The cubic root of 28059080 is about 303.8723205744.

The spelling of 28059080 in words is "twenty-eight million, fifty-nine thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 20 23 28 35 40 46 56 70 92 115 140 161 184 230 280 322 460 644 805 920 1288 1610 3220 4357 6440 8714 17428 21785 30499 34856 43570 60998 87140 100211 121996 152495 174280 200422 243992 304990 400844 501055 609980 701477 801688 1002110 1219960 1402954 2004220 2805908 3507385 4008440 5611816 7014770 14029540 28059080