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212786531484 = 223431392966741
BaseRepresentation
bin1100011000101100010…
…0001100110010011100
3202100020110101210012120
43012023010030302130
511441241323001414
6241430333502540
721242022450312
oct3061304146234
9670213353176
10212786531484
11822734a459a
12352a5941a50
13170b13cc337
14a4283600b2
155805cab2a9
hex318b10cc9c

212786531484 has 48 divisors (see below), whose sum is σ = 511703660160. Its totient is φ = 68780900160.

The previous prime is 212786531459. The next prime is 212786531519. The reversal of 212786531484 is 484135687212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1411647 + ... + 1555094.

It is an arithmetic number, because the mean of its divisors is an integer number (10660492920).

Almost surely, 2212786531484 is an apocalyptic number.

It is an amenable number.

212786531484 is an abundant number, since it is smaller than the sum of its proper divisors (298917128676).

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

212786531484 is a wasteful number, since it uses less digits than its factorization.

212786531484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966930 (or 2966928 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The spelling of 212786531484 in words is "two hundred twelve billion, seven hundred eighty-six million, five hundred thirty-one thousand, four hundred eighty-four".

Divisors: 1 2 3 4 6 12 43 86 129 139 172 258 278 417 516 556 834 1668 5977 11954 17931 23908 35862 71724 2966741 5933482 8900223 11866964 17800446 35600892 127569863 255139726 382709589 412376999 510279452 765419178 824753998 1237130997 1530838356 1649507996 2474261994 4948523988 17732210957 35464421914 53196632871 70928843828 106393265742 212786531484