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102115490880 = 26351319430649
BaseRepresentation
bin101111100011010001…
…1101011110001000000
3100202120121022102011210
41133012203223301000
53133113031202010
6114524453210120
710243342231254
oct1370643536100
9322517272153
10102115490880
113a341594777
121795a330940
139824b924b0
144d29dc0264
1529c9d11b20
hex17c68ebc40

102115490880 has 224 divisors, whose sum is σ = 367533936000. Its totient is φ = 23813111808.

The previous prime is 102115490857. The next prime is 102115490881. The reversal of 102115490880 is 88094511201.

102115490880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (102115490881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21796 + ... + 452444.

It is an arithmetic number, because the mean of its divisors is an integer number (1640776500).

Almost surely, 2102115490880 is an apocalyptic number.

102115490880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102115490880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183766968000).

102115490880 is an abundant number, since it is smaller than the sum of its proper divisors (265418445120).

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

102115490880 is a wasteful number, since it uses less digits than its factorization.

102115490880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430701 (or 430691 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The spelling of 102115490880 in words is "one hundred two billion, one hundred fifteen million, four hundred ninety thousand, eight hundred eighty".