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2889630380 = 2257131587709
BaseRepresentation
bin1010110000111100…
…0100001010101100
321110101100102200102
42230033010022230
521404221133010
61154422450232
7131415311240
oct25417041254
97411312612
102889630380
11125313708a
12687893978
1337087cb80
141d5ab6420
1511da41ba5
hexac3c42ac

2889630380 has 48 divisors (see below), whose sum is σ = 7468587840. Its totient is φ = 914519808.

The previous prime is 2889630379. The next prime is 2889630391. The reversal of 2889630380 is 830369882.

It is a happy 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, 792035 + ... + 795674.

It is an arithmetic number, because the mean of its divisors is an integer number (155595580).

Almost surely, 22889630380 is an apocalyptic number.

2889630380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2889630380 is an abundant number, since it is smaller than the sum of its proper divisors (4578957460).

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

2889630380 is a wasteful number, since it uses less digits than its factorization.

2889630380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587738 (or 1587736 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 2889630380 is about 53755.2823450868. The cubic root of 2889630380 is about 1424.3414016205.

The spelling of 2889630380 in words is "two billion, eight hundred eighty-nine million, six hundred thirty thousand, three hundred eighty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 182 260 364 455 910 1820 1587709 3175418 6350836 7938545 11113963 15877090 20640217 22227926 31754180 41280434 44455852 55569815 82560868 103201085 111139630 144481519 206402170 222279260 288963038 412804340 577926076 722407595 1444815190 2889630380