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1228698132480 = 21333571329421
BaseRepresentation
bin10001111000010100000…
…111011010000000000000
311100110111002022021212000
4101320110013122000000
5130112333210214410
62340242305104000
7154525166542530
oct21702407320000
94313432267760
101228698132480
114340a7077855
1217a168628000
138bb3403caa0
144367dac74c0
1521e643a5dc0
hex11e141da000

1228698132480 has 1792 divisors, whose sum is σ = 5575148006400. Its totient is φ = 249707888640.

The previous prime is 1228698132463. The next prime is 1228698132517. The reversal of 1228698132480 is 842318968221.

1228698132480 is a `hidden beast` number, since 1 + 2 + 2 + 86 + 9 + 81 + 3 + 2 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (1792).

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 (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2918522670 + ... + 2918523090.

It is an arithmetic number, because the mean of its divisors is an integer number (3111131700).

Almost surely, 21228698132480 is an apocalyptic number.

1228698132480 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 1228698132480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2787574003200).

1228698132480 is an abundant number, since it is smaller than the sum of its proper divisors (4346449873920).

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

1228698132480 is a wasteful number, since it uses less digits than its factorization.

1228698132480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 1228698132480 in words is "one trillion, two hundred twenty-eight billion, six hundred ninety-eight million, one hundred thirty-two thousand, four hundred eighty".