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128813064 = 23323233357
BaseRepresentation
bin1111010110110…
…00100000001000
322222101101022020
413223120200020
5230434004224
620440524440
73122615202
oct753304010
9288341266
10128813064
1166791186
1237180720
13208c1463
1413171772
15b496c79
hex7ad8808

128813064 has 32 divisors (see below), whose sum is σ = 336035520. Its totient is φ = 41070656.

The previous prime is 128813059. The next prime is 128813089. The reversal of 128813064 is 460318821.

It is a super-3 number, since 3×1288130643 (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116127 + ... + 117230.

It is an arithmetic number, because the mean of its divisors is an integer number (10501110).

Almost surely, 2128813064 is an apocalyptic number.

It is an amenable number.

128813064 is an abundant number, since it is smaller than the sum of its proper divisors (207222456).

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

128813064 is a wasteful number, since it uses less digits than its factorization.

128813064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233389 (or 233385 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 128813064 is about 11349.5843095683. The cubic root of 128813064 is about 505.0332481459.

The spelling of 128813064 in words is "one hundred twenty-eight million, eight hundred thirteen thousand, sixty-four".

Divisors: 1 2 3 4 6 8 12 23 24 46 69 92 138 184 276 552 233357 466714 700071 933428 1400142 1866856 2800284 5367211 5600568 10734422 16101633 21468844 32203266 42937688 64406532 128813064