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126812470400 = 2752721173523
BaseRepresentation
bin111011000011010011…
…1001011110010000000
3110010022210000222000222
41312012213023302000
54034202443023100
6134131251202212
712106350133100
oct1660647136200
9403283028028
10126812470400
1149865373a50
12206b12a6368
13bc5c6b1145
1461d0009200
1534730ca485
hex1d869cbc80

126812470400 has 288 divisors, whose sum is σ = 397545738480. Its totient is φ = 39525427200.

The previous prime is 126812470397. The next prime is 126812470429. The reversal of 126812470400 is 4074218621.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1688039 + ... + 1761561.

Almost surely, 2126812470400 is an apocalyptic number.

126812470400 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 126812470400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198772869240).

126812470400 is an abundant number, since it is smaller than the sum of its proper divisors (270733268080).

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

126812470400 is a wasteful number, since it uses less digits than its factorization.

126812470400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73572 (or 73548 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 126812470400 in words is "one hundred twenty-six billion, eight hundred twelve million, four hundred seventy thousand, four hundred".