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102870061 = 724348823
BaseRepresentation
bin1100010000110…
…10110000101101
321011120100012021
412020122300231
5202313320221
614112510141
72356244500
oct610326055
9234510167
10102870061
1153081888
122a54b351
1318409c78
14d93b137
159070041
hex621ac2d

102870061 has 12 divisors (see below), whose sum is σ = 122450592. Its totient is φ = 86122008.

The previous prime is 102870041. The next prime is 102870071. The reversal of 102870061 is 160078201.

It is not a de Polignac number, because 102870061 - 25 = 102870029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102870041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22305 + ... + 26518.

It is an arithmetic number, because the mean of its divisors is an integer number (10204216).

Almost surely, 2102870061 is an apocalyptic number.

It is an amenable number.

102870061 is a deficient number, since it is larger than the sum of its proper divisors (19580531).

102870061 is an equidigital number, since it uses as much as digits as its factorization.

102870061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48880 (or 48873 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 102870061 is about 10142.4879097783. The cubic root of 102870061 is about 468.5576135900.

The spelling of 102870061 in words is "one hundred two million, eight hundred seventy thousand, sixty-one".

Divisors: 1 7 43 49 301 2107 48823 341761 2099389 2392327 14695723 102870061