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132990439680 = 283557173593
BaseRepresentation
bin111101111011011011…
…0010001000100000000
3110201021022222022200000
41323312312101010000
54134331023032210
6141032302400000
712415425041250
oct1736666210400
9421238868600
10132990439680
11514456aa78a
1221936290000
13c7055bc677
146618703960
1536d5669ac0
hex1ef6d91100

132990439680 has 864 divisors, whose sum is σ = 577582596864. Its totient is φ = 28601745408.

The previous prime is 132990439669. The next prime is 132990439721. The reversal of 132990439680 is 86934099231.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (54).

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 95 ways as a sum of consecutive naturals, for example, 37011964 + ... + 37015556.

It is an arithmetic number, because the mean of its divisors is an integer number (668498376).

Almost surely, 2132990439680 is an apocalyptic number.

132990439680 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 132990439680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288791298432).

132990439680 is an abundant number, since it is smaller than the sum of its proper divisors (444592157184).

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

132990439680 is an equidigital number, since it uses as much as digits as its factorization.

132990439680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The spelling of 132990439680 in words is "one hundred thirty-two billion, nine hundred ninety million, four hundred thirty-nine thousand, six hundred eighty".