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212405742752 = 25717241791013
BaseRepresentation
bin1100010111010001011…
…1100110110010100000
3202022020220212201021012
43011310113212302200
511440001332232002
6241324452120052
721226420011140
oct3056427466240
9668226781235
10212405742752
1182098560365
12351ba306028
1317050556168
14a3cd95a920
1557d263ed52
hex31745e6ca0

212405742752 has 288 divisors, whose sum is σ = 527164485120. Its totient is φ = 82447073280.

The previous prime is 212405742733. The next prime is 212405742767. The reversal of 212405742752 is 257247504212.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 209679398 + ... + 209680410.

It is an arithmetic number, because the mean of its divisors is an integer number (1830432240).

Almost surely, 2212405742752 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212405742752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263582242560).

212405742752 is an abundant number, since it is smaller than the sum of its proper divisors (314758742368).

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

212405742752 is a wasteful number, since it uses less digits than its factorization.

212405742752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 41.

The spelling of 212405742752 in words is "two hundred twelve billion, four hundred five million, seven hundred forty-two thousand, seven hundred fifty-two".