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147031885 = 571113291013
BaseRepresentation
bin10001100001110…
…00011101001101
3101020122222211101
420300320131031
5300120010020
622331223101
73433515250
oct1060703515
9336588741
10147031885
1175aa5260
12412a7a91
13245ccc20
1415755097
15cd9500a
hex8c3874d

147031885 has 64 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 81607680.

The previous prime is 147031883. The next prime is 147031889. The reversal of 147031885 is 588130741.

It is not a de Polignac number, because 147031885 - 21 = 147031883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147031883) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 144639 + ... + 145651.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2147031885 is an apocalyptic number.

It is an amenable number.

147031885 is a deficient number, since it is larger than the sum of its proper divisors (98274995).

147031885 is a wasteful number, since it uses less digits than its factorization.

147031885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078.

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 147031885 is about 12125.6704969251. The cubic root of 147031885 is about 527.8013641496.

The spelling of 147031885 in words is "one hundred forty-seven million, thirty-one thousand, eight hundred eighty-five".

Divisors: 1 5 7 11 13 29 35 55 65 77 91 143 145 203 319 377 385 455 715 1001 1013 1015 1595 1885 2233 2639 4147 5005 5065 7091 11143 11165 13169 13195 20735 29029 29377 35455 55715 65845 78001 92183 144859 145145 146885 205639 323147 381901 390005 460915 724295 1014013 1028195 1615735 1909505 2262029 2673307 4200911 5070065 11310145 13366535 21004555 29406377 147031885