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1430804018 = 27238212
BaseRepresentation
bin101010101001000…
…0101011000110010
310200201022101010102
41111102011120302
510412241212033
6353551032402
750312430200
oct12522053062
93621271112
101430804018
11674719266
1233b20b702
1319a5756c7
14d8050070
158592bde8
hex55485632

1430804018 has 18 divisors (see below), whose sum is σ = 2497260573. Its totient is φ = 613041240.

The previous prime is 1430803993. The next prime is 1430804027. The reversal of 1430804018 is 8104080341.

It can be written as a sum of positive squares in 2 ways, for example, as 1148328769 + 282475249 = 33887^2 + 16807^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=26747.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 372548 + ... + 376368.

Almost surely, 21430804018 is an apocalyptic number.

1430804018 is a deficient number, since it is larger than the sum of its proper divisors (1066456555).

1430804018 is an frugal number, since it uses more digits than its factorization.

1430804018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658 (or 3830 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1430804018 is about 37825.9701527932. The cubic root of 1430804018 is about 1126.8342798649.

Adding to 1430804018 its reverse (8104080341), we get a palindrome (9534884359).

The spelling of 1430804018 in words is "one billion, four hundred thirty million, eight hundred four thousand, eighteen".

Divisors: 1 2 7 14 49 98 3821 7642 26747 53494 187229 374458 14600041 29200082 102200287 204400574 715402009 1430804018