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80297510400 = 2932522512777
BaseRepresentation
bin100101011001000011…
…0101100011000000000
321200021001221011112200
41022302012230120000
52303422130313100
6100515502153200
75541563401602
oct1126206543000
9250231834480
1080297510400
1131065940048
121368b582800
137758970683
143c5a4a1172
15214e689e00
hex12b21ac600

80297510400 has 360 divisors, whose sum is σ = 288611387064. Its totient is φ = 21319680000.

The previous prime is 80297510387. The next prime is 80297510411. The reversal of 80297510400 is 401579208.

80297510400 is a `hidden beast` number, since 80 + 29 + 7 + 510 + 40 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28913812 + ... + 28916588.

Almost surely, 280297510400 is an apocalyptic number.

80297510400 is a gapful number since it is divisible by the number (80) 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 80297510400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144305693532).

80297510400 is an abundant number, since it is smaller than the sum of its proper divisors (208313876664).

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

80297510400 is a wasteful number, since it uses less digits than its factorization.

80297510400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062 (or 3038 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The spelling of 80297510400 in words is "eighty billion, two hundred ninety-seven million, five hundred ten thousand, four hundred".