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1428587095 = 5131771131139
BaseRepresentation
bin101010100100110…
…1000001001010111
310200120010202002011
41111021220021113
510411204241340
6353431325051
750254534645
oct12511501127
93616122064
101428587095
116734446a1
1233a520787
13199c7a610
14d7a34195
15856400ea
hex55268257

1428587095 has 64 divisors (see below), whose sum is σ = 2011806720. Its totient is φ = 964454400.

The previous prime is 1428587081. The next prime is 1428587101. The reversal of 1428587095 is 5907858241.

It is a happy number.

It is not a de Polignac number, because 1428587095 - 27 = 1428586967 is a prime.

It is a super-2 number, since 2×14285870952 = 4081722176001078050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10277536 + ... + 10277674.

It is an arithmetic number, because the mean of its divisors is an integer number (31434480).

It is a vampire number, since it can be written as 1820978455 (with its own digits).

Almost surely, 21428587095 is an apocalyptic number.

1428587095 is a deficient number, since it is larger than the sum of its proper divisors (583219625).

1428587095 is a wasteful number, since it uses less digits than its factorization.

1428587095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its (nonzero) digits is 806400, while the sum is 49.

The square root of 1428587095 is about 37796.6545477242. The cubic root of 1428587095 is about 1126.2519974277.

The spelling of 1428587095 in words is "one billion, four hundred twenty-eight million, five hundred eighty-seven thousand, ninety-five".

Divisors: 1 5 13 17 65 71 85 131 139 221 355 655 695 923 1105 1207 1703 1807 2227 2363 4615 6035 8515 9035 9301 9869 11135 11815 15691 18209 28951 30719 46505 49345 78455 91045 120913 128297 144755 153595 158117 167773 236717 309553 604565 641485 790585 838865 1183585 1292839 1547765 2055521 2181049 4024189 6464195 10277605 10905245 16806907 20120945 21978263 84034535 109891315 285717419 1428587095