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128934008 = 2376833371
BaseRepresentation
bin1111010111101…
…10000001111000
322222121112012122
413223312001320
5231001342013
620443300412
73123630620
oct753660170
9288545178
10128934008
1166864035
123721a708
1320934518
14131a3880
15b4bca08
hex7af6078

128934008 has 32 divisors (see below), whose sum is σ = 276773760. Its totient is φ = 55160160.

The previous prime is 128934007. The next prime is 128934023. The reversal of 128934008 is 800439821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128934007) 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, 36563 + ... + 39933.

It is an arithmetic number, because the mean of its divisors is an integer number (8649180).

Almost surely, 2128934008 is an apocalyptic number.

It is an amenable number.

128934008 is an abundant number, since it is smaller than the sum of its proper divisors (147839752).

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

128934008 is a wasteful number, since it uses less digits than its factorization.

128934008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067 (or 4063 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 128934008 is about 11354.9111841529. The cubic root of 128934008 is about 505.1912591239.

The spelling of 128934008 in words is "one hundred twenty-eight million, nine hundred thirty-four thousand, eight".

Divisors: 1 2 4 7 8 14 28 56 683 1366 2732 3371 4781 5464 6742 9562 13484 19124 23597 26968 38248 47194 94388 188776 2302393 4604786 9209572 16116751 18419144 32233502 64467004 128934008