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129083060 = 22529222557
BaseRepresentation
bin1111011000110…
…10011010110100
322222220002200002
413230122122310
5231021124220
620450410432
73125121311
oct754323264
9288802602
10129083060
1166956017
1237290a18
1320987312
1413201d08
15b4ebc75
hex7b1a6b4

129083060 has 24 divisors (see below), whose sum is σ = 280423080. Its totient is φ = 49852544.

The previous prime is 129083051. The next prime is 129083063. The reversal of 129083060 is 60380921.

It can be written as a sum of positive squares in 4 ways, for example, as 169744 + 128913316 = 412^2 + 11354^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129083063) 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, 110699 + ... + 111858.

It is an arithmetic number, because the mean of its divisors is an integer number (11684295).

Almost surely, 2129083060 is an apocalyptic number.

129083060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129083060 is an abundant number, since it is smaller than the sum of its proper divisors (151340020).

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

129083060 is a wasteful number, since it uses less digits than its factorization.

129083060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222595 (or 222593 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 129083060 is about 11361.4726158188. The cubic root of 129083060 is about 505.3858567867.

The spelling of 129083060 in words is "one hundred twenty-nine million, eighty-three thousand, sixty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 222557 445114 890228 1112785 2225570 4451140 6454153 12908306 25816612 32270765 64541530 129083060