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129572008 = 2379205019
BaseRepresentation
bin1111011100100…
…01110010101000
3100000210221101021
413232101302220
5231132301013
620505102224
73132225646
oct756216250
9300727337
10129572008
116715a405
1237487974
1320ac8a37
14132cc196
15b596a8d
hex7b91ca8

129572008 has 16 divisors (see below), whose sum is σ = 246024000. Its totient is φ = 63965616.

The previous prime is 129571993. The next prime is 129572021. The reversal of 129572008 is 800275921.

129572008 is a repfigit number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101878 + ... + 103141.

It is an arithmetic number, because the mean of its divisors is an integer number (15376500).

Almost surely, 2129572008 is an apocalyptic number.

It is an amenable number.

129572008 is a deficient number, since it is larger than the sum of its proper divisors (116451992).

129572008 is a wasteful number, since it uses less digits than its factorization.

129572008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205104 (or 205100 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 129572008 is about 11382.9700869325. The cubic root of 129572008 is about 506.0231623490.

The spelling of 129572008 in words is "one hundred twenty-nine million, five hundred seventy-two thousand, eight".