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30031032288 = 2532313997849
BaseRepresentation
bin11011111101111111…
…010010111111100000
32212111220200111200010
4123331333102333200
5443000421013123
621443541124520
72112124363665
oct337577227740
985456614603
1030031032288
111181080a054
1259a13b9740
132aa793bbba
14164c605a6c
15bab708993
hex6fdfd2fe0

30031032288 has 96 divisors (see below), whose sum is σ = 82851552000. Its totient is φ = 9506128896.

The previous prime is 30031032263. The next prime is 30031032289. The reversal of 30031032288 is 88223013003.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031032289) 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, 257988 + ... + 355836.

It is an arithmetic number, because the mean of its divisors is an integer number (863037000).

Almost surely, 230031032288 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 30031032288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41425776000).

30031032288 is an abundant number, since it is smaller than the sum of its proper divisors (52820519712).

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

30031032288 is a wasteful number, since it uses less digits than its factorization.

30031032288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98024 (or 98016 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 30031032288 in words is "thirty billion, thirty-one million, thirty-two thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 23 24 32 46 48 69 92 96 138 139 184 276 278 368 417 552 556 736 834 1104 1112 1668 2208 2224 3197 3336 4448 6394 6672 9591 12788 13344 19182 25576 38364 51152 76728 97849 102304 153456 195698 293547 306912 391396 587094 782792 1174188 1565584 2250527 2348376 3131168 4501054 4696752 6751581 9002108 9393504 13503162 13601011 18004216 27006324 27202022 36008432 40803033 54012648 54404044 72016864 81606066 108025296 108808088 163212132 216050592 217616176 312823253 326424264 435232352 625646506 652848528 938469759 1251293012 1305697056 1876939518 2502586024 3753879036 5005172048 7507758072 10010344096 15015516144 30031032288