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102318880 = 255639493
BaseRepresentation
bin1100001100101…
…00001100100000
321010112100010011
412012110030200
5202143201010
614053014304
72351460526
oct606241440
9233470104
10102318880
1152835764
122a324394
1318276121
14d836316
158eb1a8a
hex6194320

102318880 has 24 divisors (see below), whose sum is σ = 241728732. Its totient is φ = 40927488.

The previous prime is 102318863. The next prime is 102318883. The reversal of 102318880 is 88813201.

It can be written as a sum of positive squares in 2 ways, for example, as 99121936 + 3196944 = 9956^2 + 1788^2 .

It is not an unprimeable number, because it can be changed into a prime (102318883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319587 + ... + 319906.

Almost surely, 2102318880 is an apocalyptic number.

102318880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102318880 is an abundant number, since it is smaller than the sum of its proper divisors (139409852).

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

102318880 is an equidigital number, since it uses as much as digits as its factorization.

102318880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639508 (or 639500 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 102318880 is about 10115.2795314811. The cubic root of 102318880 is about 467.7192657280.

The spelling of 102318880 in words is "one hundred two million, three hundred eighteen thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 639493 1278986 2557972 3197465 5115944 6394930 10231888 12789860 20463776 25579720 51159440 102318880