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187342057 = 71710631481
BaseRepresentation
bin10110010101010…
…01110011101001
3111001111221222201
423022221303221
5340424421212
630331220201
74433244520
oct1312516351
9431457881
10187342057
1196827951
12528a7661
132ca749b6
141ac494b7
15116a8b57
hexb2a9ce9

187342057 has 16 divisors (see below), whose sum is σ = 227066112. Its totient is φ = 150888960.

The previous prime is 187342037. The next prime is 187342093. The reversal of 187342057 is 750243781.

It is a cyclic number.

It is not a de Polignac number, because 187342057 - 27 = 187341929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (187342027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125757 + ... + 127237.

It is an arithmetic number, because the mean of its divisors is an integer number (14191632).

Almost surely, 2187342057 is an apocalyptic number.

187342057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

187342057 is a deficient number, since it is larger than the sum of its proper divisors (39724055).

187342057 is a wasteful number, since it uses less digits than its factorization.

187342057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 187342057 is about 13687.2954596589. The cubic root of 187342057 is about 572.1963653730.

The spelling of 187342057 in words is "one hundred eighty-seven million, three hundred forty-two thousand, fifty-seven".

Divisors: 1 7 17 119 1063 1481 7441 10367 18071 25177 126497 176239 1574303 11020121 26763151 187342057