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30770505984 = 28340065763
BaseRepresentation
bin11100101010000100…
…001010100100000000
32221102110010122212210
4130222010022210000
51001004222142414
622045154422120
72136343661661
oct345204124400
987373118783
1030770505984
111206016a639
125b68b91940
132b94bbc3ba
1416bc8d7368
15c015c6e59
hex72a10a900

30770505984 has 36 divisors (see below), whose sum is σ = 81894421616. Its totient is φ = 10256835072.

The previous prime is 30770505911. The next prime is 30770505991. The reversal of 30770505984 is 48950507703.

It is a super-2 number, since 2×307705059842 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20032114 + ... + 20033649.

Almost surely, 230770505984 is an apocalyptic number.

It is an amenable number.

30770505984 is an abundant number, since it is smaller than the sum of its proper divisors (51123915632).

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

30770505984 is an equidigital number, since it uses as much as digits as its factorization.

30770505984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40065782 (or 40065768 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The spelling of 30770505984 in words is "thirty billion, seven hundred seventy million, five hundred five thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 192 256 384 768 40065763 80131526 120197289 160263052 240394578 320526104 480789156 641052208 961578312 1282104416 1923156624 2564208832 3846313248 5128417664 7692626496 10256835328 15385252992 30770505984