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2188130912 = 25116216281
BaseRepresentation
bin1000001001101100…
…0011101001100000
312122111100120022122
42002123003221200
513440130142122
61001043123412
7105136543262
oct20233035140
95574316278
102188130912
11a23163160
12510973568
1328b437126
1416a86bb32
15cc175142
hex826c3a60

2188130912 has 24 divisors (see below), whose sum is σ = 4699509192. Its totient is φ = 994604800.

The previous prime is 2188130899. The next prime is 2188130941. The reversal of 2188130912 is 2190318812.

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, 3107789 + ... + 3108492.

It is an arithmetic number, because the mean of its divisors is an integer number (195812883).

Almost surely, 22188130912 is an apocalyptic number.

2188130912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2188130912 is an abundant number, since it is smaller than the sum of its proper divisors (2511378280).

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

2188130912 is a wasteful number, since it uses less digits than its factorization.

2188130912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6216302 (or 6216294 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 2188130912 is about 46777.4615814069. The cubic root of 2188130912 is about 1298.2483137271.

The spelling of 2188130912 in words is "two billion, one hundred eighty-eight million, one hundred thirty thousand, nine hundred twelve".

Divisors: 1 2 4 8 11 16 22 32 44 88 176 352 6216281 12432562 24865124 49730248 68379091 99460496 136758182 198920992 273516364 547032728 1094065456 2188130912