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1920860148 = 2231072575821
BaseRepresentation
bin111001001111101…
…1111111111110100
311221212102210202110
41302133133333310
512413220011043
6514334411020
765413020234
oct16237377764
94855383673
101920860148
118a6303729
12457360a70
13247c5864c
14143177cc4
15b397db33
hex727dfff4

1920860148 has 48 divisors (see below), whose sum is σ = 4542277824. Its totient is φ = 631726080.

The previous prime is 1920860131. The next prime is 1920860159. The reversal of 1920860148 is 8410680291.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327078 + ... + 332898.

It is an arithmetic number, because the mean of its divisors is an integer number (94630788).

Almost surely, 21920860148 is an apocalyptic number.

It is an amenable number.

1920860148 is an abundant number, since it is smaller than the sum of its proper divisors (2621417676).

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

1920860148 is a wasteful number, since it uses less digits than its factorization.

1920860148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192 (or 6190 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1920860148 is about 43827.6185526889. The cubic root of 1920860148 is about 1243.0785774378.

The spelling of 1920860148 in words is "one billion, nine hundred twenty million, eight hundred sixty thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 12 107 214 257 321 428 514 642 771 1028 1284 1542 3084 5821 11642 17463 23284 27499 34926 54998 69852 82497 109996 164994 329988 622847 1245694 1495997 1868541 2491388 2991994 3737082 4487991 5983988 7474164 8975982 17951964 160071679 320143358 480215037 640286716 960430074 1920860148