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2100104140 = 225105005207
BaseRepresentation
bin111110100101101…
…0000101111001100
312102100201100021211
41331023100233030
513300111313030
6544220304204
7103020406411
oct17513205714
95370640254
102100104140
119884aa362
124a73a2064
13276126394
1415ccb6108
15c458812a
hex7d2d0bcc

2100104140 has 12 divisors (see below), whose sum is σ = 4410218736. Its totient is φ = 840041648.

The previous prime is 2100104117. The next prime is 2100104141. The reversal of 2100104140 is 414010012.

It is a self number, because there is not a number n which added to its sum of digits gives 2100104140.

It is not an unprimeable number, because it can be changed into a prime (2100104141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52502584 + ... + 52502623.

It is an arithmetic number, because the mean of its divisors is an integer number (367518228).

Almost surely, 22100104140 is an apocalyptic number.

2100104140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100104140 is an abundant number, since it is smaller than the sum of its proper divisors (2310114596).

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

2100104140 is a wasteful number, since it uses less digits than its factorization.

2100104140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105005216 (or 105005214 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2100104140 is about 45826.8931960263. The cubic root of 2100104140 is about 1280.6003328145.

Adding to 2100104140 its reverse (414010012), we get a palindrome (2514114152).

The spelling of 2100104140 in words is "two billion, one hundred million, one hundred four thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 105005207 210010414 420020828 525026035 1050052070 2100104140