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2112988788 = 223321319181
BaseRepresentation
bin111110111110001…
…1010011001110100
312110020221221201000
41331330122121310
513311411120123
6545400403300
7103235052111
oct17574323164
95406857630
102112988788
119947aa829
124ab776530
132789b7c31
141608ab908
15c5780b43
hex7df1a674

2112988788 has 48 divisors (see below), whose sum is σ = 5481286720. Its totient is φ = 703922400.

The previous prime is 2112988777. The next prime is 2112988811. The reversal of 2112988788 is 8878892112.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225558 + ... + 234738.

Almost surely, 22112988788 is an apocalyptic number.

It is an amenable number.

2112988788 is an abundant number, since it is smaller than the sum of its proper divisors (3368297932).

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

2112988788 is a wasteful number, since it uses less digits than its factorization.

2112988788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11325 (or 11317 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 54.

The square root of 2112988788 is about 45967.2577820344. The cubic root of 2112988788 is about 1283.2139262302.

The spelling of 2112988788 in words is "two billion, one hundred twelve million, nine hundred eighty-eight thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 2131 4262 6393 8524 9181 12786 18362 19179 25572 27543 36724 38358 55086 57537 76716 82629 110172 115074 165258 230148 247887 330516 495774 991548 19564711 39129422 58694133 78258844 117388266 176082399 234776532 352164798 528247197 704329596 1056494394 2112988788