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392020293 = 37194373313
BaseRepresentation
bin10111010111011…
…100000101000101
31000022122200202010
4113113130011011
51300324122133
6102522204433
712500055210
oct2727340505
91008580663
10392020293
11191315715
12ab353719
13632a9492
143a0c8777
1524639263
hex175dc145

392020293 has 64 divisors (see below), whose sum is σ = 654325760. Its totient is φ = 203793408.

The previous prime is 392020271. The next prime is 392020297.

It is a happy number.

392020293 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 392020293 - 28 = 392020037 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 392020293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392020297) 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, 1252305 + ... + 1252617.

It is an arithmetic number, because the mean of its divisors is an integer number (10223840).

Almost surely, 2392020293 is an apocalyptic number.

It is an amenable number.

392020293 is a deficient number, since it is larger than the sum of its proper divisors (262305467).

392020293 is a wasteful number, since it uses less digits than its factorization.

392020293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 392020293 is about 19799.5023422307. The cubic root of 392020293 is about 731.8737707477.

The spelling of 392020293 in words is "three hundred ninety-two million, twenty thousand, two hundred ninety-three".

Divisors: 1 3 7 19 21 43 57 73 129 133 219 301 313 399 511 817 903 939 1387 1533 2191 2451 3139 4161 5719 5947 6573 9417 9709 13459 17157 17841 21973 22849 29127 40377 41629 59641 65919 68547 94213 124887 159943 178923 255721 282639 417487 434131 479829 767163 982507 1252461 1302393 1790047 2947521 3038917 5370141 6877549 9116751 18667633 20632647 56002899 130673431 392020293