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129837080 = 2353245927
BaseRepresentation
bin1111011110100…
…10100000011000
3100001022101222202
413233102200120
5231214241310
620514505332
73134411522
oct757224030
9301271882
10129837080
116732057a
1237595248
1320b8c599
141335aa12
15b5ea3a5
hex7bd2818

129837080 has 16 divisors (see below), whose sum is σ = 292133520. Its totient is φ = 51934816.

The previous prime is 129837073. The next prime is 129837131. The reversal of 129837080 is 80738921.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1622924 + ... + 1623003.

It is an arithmetic number, because the mean of its divisors is an integer number (18258345).

Almost surely, 2129837080 is an apocalyptic number.

129837080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129837080 is an abundant number, since it is smaller than the sum of its proper divisors (162296440).

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

129837080 is a wasteful number, since it uses less digits than its factorization.

129837080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245938 (or 3245934 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 129837080 is about 11394.6074965310. The cubic root of 129837080 is about 506.3679930222.

The spelling of 129837080 in words is "one hundred twenty-nine million, eight hundred thirty-seven thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 3245927 6491854 12983708 16229635 25967416 32459270 64918540 129837080