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54870144 = 2737137149
BaseRepresentation
bin1101000101010…
…0000010000000
310211020200200120
43101110002000
5103021321034
65240020240
71234250160
oct321240200
9124220616
1054870144
1128a7782a
1216461680
13b4a2054
1474045a0
154c3cc49
hex3454080

54870144 has 128 divisors (see below), whose sum is σ = 168912000. Its totient is φ = 15458304.

The previous prime is 54870139. The next prime is 54870187. The reversal of 54870144 is 44107845.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368182 + ... + 368330.

It is an arithmetic number, because the mean of its divisors is an integer number (1319625).

Almost surely, 254870144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54870144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84456000).

54870144 is an abundant number, since it is smaller than the sum of its proper divisors (114041856).

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

54870144 is a wasteful number, since it uses less digits than its factorization.

54870144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 54870144 is about 7407.4384236388. The cubic root of 54870144 is about 379.9957155565.

Adding to 54870144 its reverse (44107845), we get a palindrome (98977989).

The spelling of 54870144 in words is "fifty-four million, eight hundred seventy thousand, one hundred forty-four".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 137 149 168 192 224 274 298 336 384 411 447 448 548 596 672 822 894 896 959 1043 1096 1192 1344 1644 1788 1918 2086 2192 2384 2688 2877 3129 3288 3576 3836 4172 4384 4768 5754 6258 6576 7152 7672 8344 8768 9536 11508 12516 13152 14304 15344 16688 17536 19072 20413 23016 25032 26304 28608 30688 33376 40826 46032 50064 52608 57216 61239 61376 66752 81652 92064 100128 122478 122752 133504 142891 163304 184128 200256 244956 285782 326608 368256 400512 428673 489912 571564 653216 857346 979824 1143128 1306432 1714692 1959648 2286256 2612864 3429384 3919296 4572512 6858768 7838592 9145024 13717536 18290048 27435072 54870144