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2061600285 = 351722322931
BaseRepresentation
bin111101011100001…
…1000011000011101
312022200021010221010
41322320120120131
513210232202120
6540323125433
7102042212313
oct17270303035
95280233833
102061600285
119687a0898
12496513879
1326b164834
14157b320b3
15c0ece7e0
hex7ae1861d

2061600285 has 144 divisors (see below), whose sum is σ = 3911523840. Its totient is φ = 924887040.

The previous prime is 2061600283. The next prime is 2061600313. The reversal of 2061600285 is 5820061602.

It is not a de Polignac number, because 2061600285 - 21 = 2061600283 is a prime.

It is a super-2 number, since 2×20616002852 = 8500391470224162450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061600283) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 66503220 + ... + 66503250.

It is an arithmetic number, because the mean of its divisors is an integer number (27163360).

Almost surely, 22061600285 is an apocalyptic number.

It is an amenable number.

2061600285 is a deficient number, since it is larger than the sum of its proper divisors (1849923555).

2061600285 is a wasteful number, since it uses less digits than its factorization.

2061600285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2061600285 is about 45404.8486948255. The cubic root of 2061600285 is about 1272.7257234575.

Adding to 2061600285 its reverse (5820061602), we get a palindrome (7881661887).

The spelling of 2061600285 in words is "two billion, sixty-one million, six hundred thousand, two hundred eighty-five".

Divisors: 1 3 5 15 17 23 29 31 51 69 85 87 93 115 145 155 255 289 345 391 435 465 493 527 529 667 713 867 899 1173 1445 1479 1581 1587 1955 2001 2139 2465 2635 2645 2697 3335 3565 4335 4495 5865 6647 7395 7905 7935 8381 8959 8993 10005 10695 11339 12121 13485 15283 15341 16399 19941 20677 25143 26877 26979 33235 34017 36363 41905 44795 44965 45849 46023 49197 56695 60605 62031 76415 76705 81995 99705 103385 125715 134385 134895 152881 170085 181815 192763 206057 229245 230115 245985 259811 260797 278783 310155 351509 458643 475571 578289 618171 764405 779433 782391 836349 963815 1030285 1054527 1299055 1303985 1393915 1426713 1757545 2293215 2377855 2891445 3090855 3897165 3911955 4181745 4433549 4739311 5272635 5975653 7133565 8084707 13300647 14217933 17926959 22167745 23696555 24254121 29878265 40423535 66503235 71089665 89634795 121270605 137440019 412320057 687200095 2061600285