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128828058 = 2348744089
BaseRepresentation
bin1111010110111…
…00001010011010
322222102010212120
413223130022122
5230434444213
620441122110
73123010002
oct753341232
9288363776
10128828058
11667a1477
1237189336
13208c8228
1413177002
15b49b423
hex7adc29a

128828058 has 16 divisors (see below), whose sum is σ = 258191040. Its totient is φ = 42853536.

The previous prime is 128828053. The next prime is 128828059. The reversal of 128828058 is 850828821.

It is a super-3 number, since 3×1288280583 (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (128828053) 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, 19123 + ... + 24966.

It is an arithmetic number, because the mean of its divisors is an integer number (16136940).

Almost surely, 2128828058 is an apocalyptic number.

128828058 is an abundant number, since it is smaller than the sum of its proper divisors (129362982).

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

128828058 is a wasteful number, since it uses less digits than its factorization.

128828058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44581.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 128828058 is about 11350.2448431741. The cubic root of 128828058 is about 505.0528428839.

The spelling of 128828058 in words is "one hundred twenty-eight million, eight hundred twenty-eight thousand, fifty-eight".

Divisors: 1 2 3 6 487 974 1461 2922 44089 88178 132267 264534 21471343 42942686 64414029 128828058