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2073128180 = 225103656409
BaseRepresentation
bin111101110010001…
…0110110011110100
312100110221211020012
41323210112303310
513221210100210
6541414155352
7102242204324
oct17344266364
95313854205
102073128180
11974254982
1249a352b58
1327066c986
14159493284
15c200a305
hex7b916cf4

2073128180 has 12 divisors (see below), whose sum is σ = 4353569220. Its totient is φ = 829251264.

The previous prime is 2073128173. The next prime is 2073128201. The reversal of 2073128180 is 818213702.

It can be written as a sum of positive squares in 2 ways, for example, as 561784804 + 1511343376 = 23702^2 + 38876^2 .

It is a super-2 number, since 2×20731281802 = 8595720901420224800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51828185 + ... + 51828224.

It is an arithmetic number, because the mean of its divisors is an integer number (362797435).

Almost surely, 22073128180 is an apocalyptic number.

2073128180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2073128180 is an abundant number, since it is smaller than the sum of its proper divisors (2280441040).

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

2073128180 is a wasteful number, since it uses less digits than its factorization.

2073128180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103656418 (or 103656416 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 2073128180 is about 45531.6173663972. The cubic root of 2073128180 is about 1275.0935581737.

The spelling of 2073128180 in words is "two billion, seventy-three million, one hundred twenty-eight thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 103656409 207312818 414625636 518282045 1036564090 2073128180