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212888472412 = 227117389191557
BaseRepresentation
bin1100011001000100100…
…1000100101101011100
3202100111120012220212111
43012101021010231130
511441443422104122
6241444414443404
721244401105220
oct3062111045534
9670446186774
10212888472412
1182315aa12a0
1235313b03564
13170c9572405
14a437ad8780
15580ebe5d77
hex3191244b5c

212888472412 has 192 divisors, whose sum is σ = 479489310720. Its totient is φ = 80320204800.

The previous prime is 212888472409. The next prime is 212888472469. The reversal of 212888472412 is 214274888212.

It is a happy number.

It is a super-3 number, since 3×2128884724123 (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 382205238 + ... + 382205794.

It is an arithmetic number, because the mean of its divisors is an integer number (2497340160).

Almost surely, 2212888472412 is an apocalyptic number.

212888472412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212888472412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239744655360).

212888472412 is an abundant number, since it is smaller than the sum of its proper divisors (266600838308).

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

212888472412 is a wasteful number, since it uses less digits than its factorization.

212888472412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 930 counting only the distinct ones).

The product of its digits is 917504, while the sum is 49.

The spelling of 212888472412 in words is "two hundred twelve billion, eight hundred eighty-eight million, four hundred seventy-two thousand, four hundred twelve".