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74902931807 = 112373139163179
BaseRepresentation
bin100010111000010010…
…0000000100101011111
321011100010002011220112
41011300210000211133
52211400122304212
654224313440235
75261110262324
oct1056044004537
9234303064815
1074902931807
1129847830330
1212624a1007b
1370a914b032
1438a7c4ab4b
151e35c91422
hex117090095f

74902931807 has 64 divisors (see below), whose sum is σ = 88078233600. Its totient is φ = 63033189120.

The previous prime is 74902931797. The next prime is 74902931819. The reversal of 74902931807 is 70813920947.

It is not a de Polignac number, because 74902931807 - 24 = 74902931791 is a prime.

It is a super-2 number, since 2×749029318072 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74902931897) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 418452044 + ... + 418452222.

It is an arithmetic number, because the mean of its divisors is an integer number (1376222400).

Almost surely, 274902931807 is an apocalyptic number.

74902931807 is a deficient number, since it is larger than the sum of its proper divisors (13175301793).

74902931807 is a wasteful number, since it uses less digits than its factorization.

74902931807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 74902931807 in words is "seventy-four billion, nine hundred two million, nine hundred thirty-one thousand, eight hundred seven".

Divisors: 1 11 23 73 139 163 179 253 803 1529 1679 1793 1969 3197 3749 4117 10147 11899 13067 18469 22657 24881 29177 35167 41239 45287 111617 130889 143737 233381 249227 273677 273691 300541 320947 521111 572263 671071 1653961 1816313 2129921 2567191 3010447 3305951 4055603 5732221 6294893 7381781 18193571 19979443 23429131 38041103 41775199 44611633 48988183 93278869 296059019 418452133 459527189 538870013 1026067559 3256649209 6809357437 74902931807