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27538074916 = 221121923972
BaseRepresentation
bin11001101001011001…
…011010110100100100
32122002011202011001121
4121221121122310210
5422344221344131
620352324303324
71663263526462
oct315131326444
978064664047
1027538074916
1110751586300
125406541b44
13279b3071b1
1414934a9832
15ab291e911
hex66965ad24

27538074916 has 81 divisors (see below), whose sum is σ = 56046820977. Its totient is φ = 11828630880.

The previous prime is 27538074913. The next prime is 27538074923. The reversal of 27538074916 is 61947083572.

The square root of 27538074916 is 165946.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 18455222500 + 9082852416 = 135850^2 + 95304^2 .

It is not an unprimeable number, because it can be changed into a prime (27538074913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 69365230 + ... + 69365626.

It is a 2-persistent number, because it is pandigital, and so is 2⋅27538074916 = 55076149832, but 3⋅27538074916 = 82614224748 is not.

Almost surely, 227538074916 is an apocalyptic number.

27538074916 is the 165946-th square number.

It is an amenable number.

27538074916 is an abundant number, since it is smaller than the sum of its proper divisors (28508746061).

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

27538074916 is a wasteful number, since it uses less digits than its factorization.

27538074916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 429 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 27538074916 in words is "twenty-seven billion, five hundred thirty-eight million, seventy-four thousand, nine hundred sixteen".

Divisors: 1 2 4 11 19 22 38 44 76 121 209 242 361 397 418 484 722 794 836 1444 1588 2299 3971 4367 4598 7543 7942 8734 9196 15086 15884 17468 30172 43681 48037 82973 87362 96074 143317 157609 165946 174724 192148 286634 315218 331892 573268 630436 912703 1576487 1733699 1825406 2994571 3152974 3467398 3650812 5989142 6305948 6934796 11978284 17341357 19070689 32940281 34682714 38141378 56896849 65880562 69365428 76282756 113793698 131761124 227587396 362343091 625865339 724686182 1251730678 1449372364 2503461356 6884518729 13769037458 27538074916