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12800470088 = 2371919162987
BaseRepresentation
bin10111110101111011…
…11010110001001000
31020001002100020212202
423322331322301020
5202203410020323
65514102255332
7632131125530
oct137275726110
936032306782
1012800470088
1154795936aa
122592a27548
13128cc50673
1489606a4c0
154edb8bd28
hex2faf7ac48

12800470088 has 64 divisors (see below), whose sum is σ = 29024870400. Its totient is φ = 5169890880.

The previous prime is 12800470079. The next prime is 12800470099. The reversal of 12800470088 is 88007400821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171731 + ... + 234717.

It is an arithmetic number, because the mean of its divisors is an integer number (453513600).

Almost surely, 212800470088 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 12800470088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14512435200).

12800470088 is an abundant number, since it is smaller than the sum of its proper divisors (16224400312).

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

12800470088 is a wasteful number, since it uses less digits than its factorization.

12800470088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63210 (or 63206 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The spelling of 12800470088 in words is "twelve billion, eight hundred million, four hundred seventy thousand, eighty-eight".

Divisors: 1 2 4 7 8 14 19 28 38 56 76 133 152 191 266 382 532 764 1064 1337 1528 2674 3629 5348 7258 10696 14516 25403 29032 50806 62987 101612 125974 203224 251948 440909 503896 881818 1196753 1763636 2393506 3527272 4787012 8377271 9574024 12030517 16754542 24061034 33509084 48122068 67018168 84213619 96244136 168427238 228579823 336854476 457159646 673708952 914319292 1600058761 1828638584 3200117522 6400235044 12800470088