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1128830888 = 231953140123
BaseRepresentation
bin100001101001000…
…1001011110101000
32220200002112212102
41003102021132220
54302440042023
6304002432532
736654622103
oct10322113650
92820075772
101128830888
1152a217399
12276062748
1314cb36793
14a9cc573a
156917d628
hex434897a8

1128830888 has 32 divisors (see below), whose sum is σ = 2270008800. Its totient is φ = 524616768.

The previous prime is 1128830881. The next prime is 1128830897. The reversal of 1128830888 is 8880388211.

It is not an unprimeable number, because it can be changed into a prime (1128830881) 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, 62006 + ... + 78117.

It is an arithmetic number, because the mean of its divisors is an integer number (70937775).

Almost surely, 21128830888 is an apocalyptic number.

It is an amenable number.

1128830888 is an abundant number, since it is smaller than the sum of its proper divisors (1141177912).

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

1128830888 is a wasteful number, since it uses less digits than its factorization.

1128830888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140201 (or 140197 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 47.

The square root of 1128830888 is about 33598.0786355411. The cubic root of 1128830888 is about 1041.2211026790.

The spelling of 1128830888 in words is "one billion, one hundred twenty-eight million, eight hundred thirty thousand, eight hundred eighty-eight".

Divisors: 1 2 4 8 19 38 53 76 106 152 212 424 1007 2014 4028 8056 140123 280246 560492 1120984 2662337 5324674 7426519 10649348 14853038 21298696 29706076 59412152 141103861 282207722 564415444 1128830888