Search a number
-
+
28006504070 = 2519236408811
BaseRepresentation
bin11010000101010100…
…010101011010000110
32200021211011211001112
4122011110111122012
5424324131112240
620511020325022
72011012233236
oct320524253206
980254154045
1028006504070
1110971a3a036
1255173a3772
1328443872cc
1414d97a3cc6
15addaed665
hex685515686

28006504070 has 32 divisors (see below), whose sum is σ = 55372135680. Its totient is φ = 10151555040.

The previous prime is 28006504063. The next prime is 28006504129. The reversal of 28006504070 is 7040560082.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3200036 + ... + 3208775.

It is an arithmetic number, because the mean of its divisors is an integer number (1730379240).

Almost surely, 228006504070 is an apocalyptic number.

28006504070 is a deficient number, since it is larger than the sum of its proper divisors (27365631610).

28006504070 is a wasteful number, since it uses less digits than its factorization.

28006504070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6408860.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 28006504070 in words is "twenty-eight billion, six million, five hundred four thousand, seventy".

Divisors: 1 2 5 10 19 23 38 46 95 115 190 230 437 874 2185 4370 6408811 12817622 32044055 64088110 121767409 147402653 243534818 294805306 608837045 737013265 1217674090 1474026530 2800650407 5601300814 14003252035 28006504070