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31054368 = 253615303
BaseRepresentation
bin111011001110…
…1101000100000
32011102201120210
41312131220200
530422214433
63025334120
7524646342
oct166355040
964381523
1031054368
1116590674
12a497340
136583b87
1441a5292
152ad6463
hex1d9da20

31054368 has 48 divisors (see below), whose sum is σ = 82869696. Its totient is φ = 10179840.

The previous prime is 31054363. The next prime is 31054391. The reversal of 31054368 is 86345013.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (31054363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3205 + ... + 8507.

It is an arithmetic number, because the mean of its divisors is an integer number (1726452).

Almost surely, 231054368 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 31054368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41434848).

31054368 is an abundant number, since it is smaller than the sum of its proper divisors (51815328).

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

31054368 is a wasteful number, since it uses less digits than its factorization.

31054368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5377 (or 5369 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 31054368 is about 5572.6446145434. The cubic root of 31054368 is about 314.3216037724.

The spelling of 31054368 in words is "thirty-one million, fifty-four thousand, three hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 61 96 122 183 244 366 488 732 976 1464 1952 2928 5303 5856 10606 15909 21212 31818 42424 63636 84848 127272 169696 254544 323483 509088 646966 970449 1293932 1940898 2587864 3881796 5175728 7763592 10351456 15527184 31054368