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48809812688 = 24713109730559
BaseRepresentation
bin101101011101010010…
…101010001011010000
311122222122021101120022
4231131102222023100
51244430303001223
634231203403012
73345360363620
oct553522521320
9148878241508
1048809812688
111977795977a
129562383468
1347ab302a90
142510636880
15140a146ac8
hexb5d4aa2d0

48809812688 has 80 divisors (see below), whose sum is σ = 116502543360. Its totient is φ = 19291143168.

The previous prime is 48809812673. The next prime is 48809812693. The reversal of 48809812688 is 88621890884.

It is a self number, because there is not a number n which added to its sum of digits gives 48809812688.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1581953 + ... + 1612511.

It is an arithmetic number, because the mean of its divisors is an integer number (1456281792).

Almost surely, 248809812688 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 48809812688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58251271680).

48809812688 is an abundant number, since it is smaller than the sum of its proper divisors (67692730672).

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

48809812688 is a wasteful number, since it uses less digits than its factorization.

48809812688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31684 (or 31678 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 62.

The spelling of 48809812688 in words is "forty-eight billion, eight hundred nine million, eight hundred twelve thousand, six hundred eighty-eight".

Divisors: 1 2 4 7 8 13 14 16 26 28 52 56 91 104 112 182 208 364 728 1097 1456 2194 4388 7679 8776 14261 15358 17552 28522 30559 30716 57044 61118 61432 99827 114088 122236 122864 199654 213913 228176 244472 397267 399308 427826 488944 794534 798616 855652 1589068 1597232 1711304 2780869 3178136 3422608 5561738 6356272 11123476 22246952 33523223 44493904 67046446 134092892 234662561 268185784 435801899 469325122 536371568 871603798 938650244 1743207596 1877300488 3050613293 3486415192 3754600976 6101226586 6972830384 12202453172 24404906344 48809812688