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102907331280 = 2436513253197
BaseRepresentation
bin101111111010111000…
…0010100001011010000
3100211121210022002000000
41133311300110023100
53141223234100110
6115135221130000
710302065611665
oct1376560241320
9324553262000
10102907331280
113a708562126
1217b3b559900
13991cc49400
144da3223a6c
152a245c61c0
hex17f5c142d0

102907331280 has 840 divisors, whose sum is σ = 397780185528. Its totient is φ = 24726933504.

The previous prime is 102907331273. The next prime is 102907331297. The reversal of 102907331280 is 82133709201.

102907331280 is a `hidden beast` number, since 10 + 290 + 7 + 331 + 28 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 16992686736 + 85914644544 = 130356^2 + 293112^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 522372142 + ... + 522372338.

Almost surely, 2102907331280 is an apocalyptic number.

102907331280 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 102907331280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198890092764).

102907331280 is an abundant number, since it is smaller than the sum of its proper divisors (294872854248).

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

102907331280 is a wasteful number, since it uses less digits than its factorization.

102907331280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 102907331280 in words is "one hundred two billion, nine hundred seven million, three hundred thirty-one thousand, two hundred eighty".