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10102443040 = 25563140269
BaseRepresentation
bin10010110100010011…
…10000110000100000
3222002001112021120001
421122021300300200
5131142211134130
64350242225344
7505230230464
oct113211606040
928061467501
1010102443040
114314624a88
121b5b355254
13c4cca7c61
146bb9cc4a4
153e1d966ca
hex25a270c20

10102443040 has 24 divisors (see below), whose sum is σ = 23867022060. Its totient is φ = 4040977152.

The previous prime is 10102443017. The next prime is 10102443097. The reversal of 10102443040 is 4034420101.

It can be written as a sum of positive squares in 2 ways, for example, as 8999937424 + 1102505616 = 94868^2 + 33204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10102442999 and 10102443017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31569975 + ... + 31570294.

Almost surely, 210102443040 is an apocalyptic number.

10102443040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10102443040 is an abundant number, since it is smaller than the sum of its proper divisors (13764579020).

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

10102443040 is an equidigital number, since it uses as much as digits as its factorization.

10102443040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63140284 (or 63140276 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10102443040 its reverse (4034420101), we get a palindrome (14136863141).

The spelling of 10102443040 in words is "ten billion, one hundred two million, four hundred forty-three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 63140269 126280538 252561076 315701345 505122152 631402690 1010244304 1262805380 2020488608 2525610760 5051221520 10102443040