Search a number
-
+
2780500300280 = 235613113397239
BaseRepresentation
bin101000011101100010101…
…110111001000111111000
3100211210221211212012122222
4220131202232321013320
5331023431034102110
65525202203103212
7404612250410423
oct50354256710770
910753854765588
102780500300280
11982226a2856a
1238aa67b11b08
1317227a694a91
14988111629ba
154c4d942ac55
hex28762bb91f8

2780500300280 has 32 divisors (see below), whose sum is σ = 6266331482400. Its totient is φ = 1110385754496.

The previous prime is 2780500300229. The next prime is 2780500300327. The reversal of 2780500300280 is 820030050872.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2780500300280.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56674100 + ... + 56723139.

It is an arithmetic number, because the mean of its divisors is an integer number (195822858825).

Almost surely, 22780500300280 is an apocalyptic number.

2780500300280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2780500300280 is an abundant number, since it is smaller than the sum of its proper divisors (3485831182120).

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

2780500300280 is a wasteful number, since it uses less digits than its factorization.

2780500300280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113397863 (or 113397859 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The spelling of 2780500300280 in words is "two trillion, seven hundred eighty billion, five hundred million, three hundred thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 613 1226 2452 3065 4904 6130 12260 24520 113397239 226794478 453588956 566986195 907177912 1133972390 2267944780 4535889560 69512507507 139025015014 278050030028 347562537535 556100060056 695125075070 1390250150140 2780500300280