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1678041344 = 287936407
BaseRepresentation
bin110010000000100…
…1110000100000000
311022221112022222102
41210001032010000
511414034310334
6434302125532
756404054550
oct14401160400
94287468872
101678041344
11791235331
123a9b808a8
1320985b795
1411cc0b160
159c4b767e
hex6404e100

1678041344 has 36 divisors (see below), whose sum is σ = 3828035904. Its totient is φ = 719159808.

The previous prime is 1678041341. The next prime is 1678041367. The reversal of 1678041344 is 4431408761.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1678041298 and 1678041307.

It is not an unprimeable number, because it can be changed into a prime (1678041341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466412 + ... + 469995.

Almost surely, 21678041344 is an apocalyptic number.

1678041344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1678041344 is an abundant number, since it is smaller than the sum of its proper divisors (2149994560).

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

1678041344 is an frugal number, since it uses more digits than its factorization.

1678041344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936430 (or 936416 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 1678041344 is about 40963.9029390511. The cubic root of 1678041344 is about 1188.3222228658.

The spelling of 1678041344 in words is "one billion, six hundred seventy-eight million, forty-one thousand, three hundred forty-four".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 224 256 448 896 1792 936407 1872814 3745628 6554849 7491256 13109698 14982512 26219396 29965024 52438792 59930048 104877584 119860096 209755168 239720192 419510336 839020672 1678041344