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1678054292 = 2217229107761
BaseRepresentation
bin110010000000101…
…0001001110010100
311022221112222201222
41210001101032110
511414040214132
6434302305512
756404140365
oct14401211624
94287488658
101678054292
11791244032
123a9b88298
13209864645
1411cc11b6c
159c4bb412
hex64051394

1678054292 has 24 divisors (see below), whose sum is σ = 3122942760. Its totient is φ = 786216960.

The previous prime is 1678054277. The next prime is 1678054349. The reversal of 1678054292 is 2924508761.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 761539216 + 916515076 = 27596^2 + 30274^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38309 + ... + 69452.

It is an arithmetic number, because the mean of its divisors is an integer number (130122615).

Almost surely, 21678054292 is an apocalyptic number.

It is an amenable number.

1678054292 is a deficient number, since it is larger than the sum of its proper divisors (1444888468).

1678054292 is a wasteful number, since it uses less digits than its factorization.

1678054292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108011 (or 108009 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 1678054292 is about 40964.0609803276. The cubic root of 1678054292 is about 1188.3252792777.

The spelling of 1678054292 in words is "one billion, six hundred seventy-eight million, fifty-four thousand, two hundred ninety-two".

Divisors: 1 2 4 17 34 68 229 458 916 3893 7786 15572 107761 215522 431044 1831937 3663874 7327748 24677269 49354538 98709076 419513573 839027146 1678054292