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102920975 = 52172310529
BaseRepresentation
bin1100010001001…
…11001100001111
321011122221000222
412020213030033
5202321432400
614113541555
72356546103
oct610471417
9234587028
10102920975
1153107063
122a5748bb
13184271b1
14d951903
159080185
hex622730f

102920975 has 24 divisors (see below), whose sum is σ = 141017760. Its totient is φ = 74117120.

The previous prime is 102920959. The next prime is 102920981. The reversal of 102920975 is 579029201.

It is not a de Polignac number, because 102920975 - 24 = 102920959 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 4511 + ... + 15039.

It is an arithmetic number, because the mean of its divisors is an integer number (5875740).

Almost surely, 2102920975 is an apocalyptic number.

102920975 is a deficient number, since it is larger than the sum of its proper divisors (38096785).

102920975 is a wasteful number, since it uses less digits than its factorization.

102920975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10579 (or 10574 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 102920975 is about 10144.9975357316. The cubic root of 102920975 is about 468.6349027042.

The spelling of 102920975 in words is "one hundred two million, nine hundred twenty thousand, nine hundred seventy-five".

Divisors: 1 5 17 23 25 85 115 391 425 575 1955 9775 10529 52645 178993 242167 263225 894965 1210835 4116839 4474825 6054175 20584195 102920975