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128485607 = 3131113327
BaseRepresentation
bin1111010100010…
…00100011100111
322221202202010012
413222020203213
5230343014412
620425520435
73120052415
oct752104347
9287682105
10128485607
1166588158
123704311b
13208083b3
14130c82b5
15b42ec22
hex7a888e7

128485607 has 8 divisors (see below), whose sum is σ = 133066752. Its totient is φ = 123931800.

The previous prime is 128485601. The next prime is 128485661. The reversal of 128485607 is 706584821.

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

It is not a de Polignac number, because 128485607 - 212 = 128481511 is a prime.

It is a super-3 number, since 3×1284856073 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128485601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2978 + ... + 16304.

It is an arithmetic number, because the mean of its divisors is an integer number (16633344).

Almost surely, 2128485607 is an apocalyptic number.

128485607 is a deficient number, since it is larger than the sum of its proper divisors (4581145).

128485607 is a wasteful number, since it uses less digits than its factorization.

128485607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13669.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 128485607 is about 11335.1491829618. The cubic root of 128485607 is about 504.6049349488.

The spelling of 128485607 in words is "one hundred twenty-eight million, four hundred eighty-five thousand, six hundred seven".

Divisors: 1 31 311 9641 13327 413137 4144697 128485607