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128034401 = 1118716221
BaseRepresentation
bin1111010000110…
…10011001100001
322220220211011212
413220122121201
5230234100101
620412115505
73113163065
oct750323141
9286824155
10128034401
11662aa160
1236a65b95
13206aac01
141300baa5
15b3911bb
hex7a1a661

128034401 has 8 divisors (see below), whose sum is σ = 139771008. Its totient is φ = 116314000.

The previous prime is 128034397. The next prime is 128034409. The reversal of 128034401 is 104430821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128034401 - 22 = 128034397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128034409) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17471 + ... + 23691.

It is an arithmetic number, because the mean of its divisors is an integer number (17471376).

Almost surely, 2128034401 is an apocalyptic number.

128034401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

128034401 is a deficient number, since it is larger than the sum of its proper divisors (11736607).

128034401 is a wasteful number, since it uses less digits than its factorization.

128034401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 128034401 is about 11315.2287206225. The cubic root of 128034401 is about 504.0135643973.

The spelling of 128034401 in words is "one hundred twenty-eight million, thirty-four thousand, four hundred one".

Divisors: 1 11 1871 6221 20581 68431 11639491 128034401