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129941908 = 22156720731
BaseRepresentation
bin1111011111011…
…00000110010100
3100001111201210021
413233230012110
5231231120113
620521034524
73135326245
oct757540624
9301451707
10129941908
1167392308
1237625a44
1320bc8205
1413386ccc
15b61b48d
hex7bec194

129941908 has 12 divisors (see below), whose sum is σ = 227554432. Its totient is φ = 64926360.

The previous prime is 129941873. The next prime is 129941921. The reversal of 129941908 is 809149921.

It is a happy number.

It is a congruent 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, 4098 + ... + 16633.

Almost surely, 2129941908 is an apocalyptic number.

It is an amenable number.

129941908 is a deficient number, since it is larger than the sum of its proper divisors (97612524).

129941908 is a wasteful number, since it uses less digits than its factorization.

129941908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22302 (or 22300 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 129941908 is about 11399.2064636096. The cubic root of 129941908 is about 506.5042336727.

The spelling of 129941908 in words is "one hundred twenty-nine million, nine hundred forty-one thousand, nine hundred eight".

Divisors: 1 2 4 1567 3134 6268 20731 41462 82924 32485477 64970954 129941908