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1872816055 = 511232591091
BaseRepresentation
bin110111110100000…
…1110011110110111
311211112000220122121
41233220032132313
512313420103210
6505500540411
764260450055
oct15750163667
94745026577
101872816055
11881179470
12443251707
1323b0065a6
1413aa2d1d5
15ae63d6da
hex6fa0e7b7

1872816055 has 48 divisors (see below), whose sum is σ = 2608744320. Its totient is φ = 1279572800.

The previous prime is 1872816007. The next prime is 1872816059. The reversal of 1872816055 is 5506182781.

It is not a de Polignac number, because 1872816055 - 213 = 1872807863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872816059) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1716060 + ... + 1717150.

It is an arithmetic number, because the mean of its divisors is an integer number (54348840).

Almost surely, 21872816055 is an apocalyptic number.

1872816055 is a deficient number, since it is larger than the sum of its proper divisors (735928265).

1872816055 is a wasteful number, since it uses less digits than its factorization.

1872816055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 43.

The square root of 1872816055 is about 43276.0448169654. The cubic root of 1872816055 is about 1232.6270892486.

The spelling of 1872816055 in words is "one billion, eight hundred seventy-two million, eight hundred sixteen thousand, fifty-five".

Divisors: 1 5 11 23 55 59 115 253 295 529 649 1091 1265 1357 2645 3245 5455 5819 6785 12001 14927 25093 29095 31211 60005 64369 74635 125465 156055 276023 321845 343321 577139 708059 1380115 1480487 1716605 2885695 3540295 6348529 7402435 16285357 31742645 34051201 81426785 170256005 374563211 1872816055