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102315250420 = 22519353976081
BaseRepresentation
bin101111101001001110…
…1101101001011110100
3100210002112012020202021
41133102131231023310
53134020201003140
6115000350522524
710251316164505
oct1372235551364
9323075166667
10102315250420
113a434322aa9
12179b5206444
1398573941c6
144d4873cbac
1529dc61eb4a
hex17d276d2f4

102315250420 has 48 divisors (see below), whose sum is σ = 226237435200. Its totient is φ = 38760629760.

The previous prime is 102315250403. The next prime is 102315250459. The reversal of 102315250420 is 24052513201.

It is a congruent number.

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, 1306780 + ... + 1382860.

It is an arithmetic number, because the mean of its divisors is an integer number (4713279900).

Almost surely, 2102315250420 is an apocalyptic number.

102315250420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102315250420 is an abundant number, since it is smaller than the sum of its proper divisors (123922184780).

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

102315250420 is a wasteful number, since it uses less digits than its factorization.

102315250420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79648 (or 79646 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 102315250420 its reverse (24052513201), we get a palindrome (126367763621).

The spelling of 102315250420 in words is "one hundred two billion, three hundred fifteen million, two hundred fifty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 3539 7078 14156 17695 35390 67241 70780 76081 134482 152162 268964 304324 336205 380405 672410 760810 1344820 1445539 1521620 2891078 5782156 7227695 14455390 28910780 269250659 538501318 1077002636 1346253295 2692506590 5115762521 5385013180 10231525042 20463050084 25578812605 51157625210 102315250420