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2154145410 = 232531217669
BaseRepresentation
bin1000000001100101…
…1010011010000010
312120010101220222100
42000121122122002
513402430123120
6553430451230
7104244635214
oct20031323202
95503356870
102154145410
11a05a6036a
12501503b16
13284398071
141661425b4
15c91b0490
hex8065a682

2154145410 has 48 divisors (see below), whose sum is σ = 5603303160. Its totient is φ = 574179840.

The previous prime is 2154145373. The next prime is 2154145417. The reversal of 2154145410 is 145414512.

It can be written as a sum of positive squares in 4 ways, for example, as 1535777721 + 618367689 = 39189^2 + 24867^2 .

It is not an unprimeable number, because it can be changed into a prime (2154145417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 277056 + ... + 284724.

Almost surely, 22154145410 is an apocalyptic number.

2154145410 is an abundant number, since it is smaller than the sum of its proper divisors (3449157750).

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

2154145410 is a wasteful number, since it uses less digits than its factorization.

2154145410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10803 (or 10800 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 2154145410 is about 46412.7720568380. The cubic root of 2154145410 is about 1291.4918561531.

Adding to 2154145410 its reverse (145414512), we get a palindrome (2299559922).

The spelling of 2154145410 in words is "two billion, one hundred fifty-four million, one hundred forty-five thousand, four hundred ten".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 3121 6242 7669 9363 15338 15605 18726 23007 28089 31210 38345 46014 46815 56178 69021 76690 93630 115035 138042 140445 230070 280890 345105 690210 23934949 47869898 71804847 119674745 143609694 215414541 239349490 359024235 430829082 718048470 1077072705 2154145410