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102303101220 = 22356127951667
BaseRepresentation
bin101111101000110111…
…1010111000100100100
3100210001200100000011220
41133101233113010210
53134004043214340
6114555234300340
710251111004215
oct1372157270444
9323050300156
10102303101220
113a428485141
12179b11276b0
1398549cc328
144d46c9940c
1529db51eed0
hex17d1bd7124

102303101220 has 48 divisors (see below), whose sum is σ = 291144573888. Its totient is φ = 26833599360.

The previous prime is 102303101191. The next prime is 102303101261. The reversal of 102303101220 is 22101303201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102303101220.

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, 13972174 + ... + 13979493.

It is an arithmetic number, because the mean of its divisors is an integer number (6065511956).

Almost surely, 2102303101220 is an apocalyptic number.

102303101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102303101220 is an abundant number, since it is smaller than the sum of its proper divisors (188841472668).

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

102303101220 is a wasteful number, since it uses less digits than its factorization.

102303101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27951740 (or 27951738 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 102303101220 its reverse (22101303201), we get a palindrome (124404404421).

The spelling of 102303101220 in words is "one hundred two billion, three hundred three million, one hundred one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 61 122 183 244 305 366 610 732 915 1220 1830 3660 27951667 55903334 83855001 111806668 139758335 167710002 279516670 335420004 419275005 559033340 838550010 1677100020 1705051687 3410103374 5115155061 6820206748 8525258435 10230310122 17050516870 20460620244 25575775305 34101033740 51151550610 102303101220