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538505960 = 23531214009
BaseRepresentation
bin100000000110001…
…111001011101000
31101112021221022012
4200012033023220
52100324142320
6125234015052
716226140136
oct4006171350
91345257265
10538505960
11256a77553
12130417488
13877478a5
145173a756
15324224c5
hex2018f2e8

538505960 has 48 divisors (see below), whose sum is σ = 1252073700. Its totient is φ = 208439040.

The previous prime is 538505911. The next prime is 538505977. The reversal of 538505960 is 69505835.

It can be written as a sum of positive squares in 2 ways, for example, as 534811876 + 3694084 = 23126^2 + 1922^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31436 + ... + 45444.

Almost surely, 2538505960 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 538505960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626036850).

538505960 is an abundant number, since it is smaller than the sum of its proper divisors (713567740).

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

538505960 is a wasteful number, since it uses less digits than its factorization.

538505960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14082 (or 14047 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 538505960 is about 23205.7311886525. The cubic root of 538505960 is about 813.5735823155.

The spelling of 538505960 in words is "five hundred thirty-eight million, five hundred five thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 20 31 40 62 124 155 248 310 620 961 1240 1922 3844 4805 7688 9610 14009 19220 28018 38440 56036 70045 112072 140090 280180 434279 560360 868558 1737116 2171395 3474232 4342790 8685580 13462649 17371160 26925298 53850596 67313245 107701192 134626490 269252980 538505960