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1368811884 = 2231145722691
BaseRepresentation
bin101000110010110…
…0110100101101100
310112101122211220110
41101211212211230
510300403440014
6343454220020
745630465126
oct12145464554
93471584813
101368811884
116427276a0
123224b4610
1318a77ba7b
14cdb14216
1580283d59
hex5196696c

1368811884 has 48 divisors (see below), whose sum is σ = 3492026496. Its totient is φ = 413865600.

The previous prime is 1368811883. The next prime is 1368811891. The reversal of 1368811884 is 4881188631.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1368811883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48979 + ... + 71669.

It is an arithmetic number, because the mean of its divisors is an integer number (72750552).

Almost surely, 21368811884 is an apocalyptic number.

It is an amenable number.

1368811884 is an abundant number, since it is smaller than the sum of its proper divisors (2123214612).

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

1368811884 is a wasteful number, since it uses less digits than its factorization.

1368811884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23166 (or 23164 counting only the distinct ones).

The product of its digits is 294912, while the sum is 48.

The square root of 1368811884 is about 36997.4578045573. The cubic root of 1368811884 is about 1110.3193854081.

The spelling of 1368811884 in words is "one billion, three hundred sixty-eight million, eight hundred eleven thousand, eight hundred eighty-four".

Divisors: 1 2 3 4 6 11 12 22 33 44 66 132 457 914 1371 1828 2742 5027 5484 10054 15081 20108 22691 30162 45382 60324 68073 90764 136146 249601 272292 499202 748803 998404 1497606 2995212 10369787 20739574 31109361 41479148 62218722 114067657 124437444 228135314 342202971 456270628 684405942 1368811884