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102280871 = 7111328323
BaseRepresentation
bin1100001100010…
…10111010100111
321010110101222102
412012022322213
5202140441441
614052122315
72351241650
oct606127247
9233411872
10102280871
115280a150
122a30639b
1318261a34
14d826527
158ea569b
hex618aea7

102280871 has 8 divisors (see below), whose sum is σ = 127519104. Its totient is φ = 79699320.

The previous prime is 102280859. The next prime is 102280877. The reversal of 102280871 is 178082201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102280871 - 222 = 98086567 is a prime.

It is a super-2 number, since 2×1022808712 = 20922753145037282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102280877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664085 + ... + 664238.

It is an arithmetic number, because the mean of its divisors is an integer number (15939888).

Almost surely, 2102280871 is an apocalyptic number.

102280871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102280871 is a deficient number, since it is larger than the sum of its proper divisors (25238233).

102280871 is a wasteful number, since it uses less digits than its factorization.

102280871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328341.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 102280871 is about 10113.4005655862. The cubic root of 102280871 is about 467.6613430738.

The spelling of 102280871 in words is "one hundred two million, two hundred eighty thousand, eight hundred seventy-one".

Divisors: 1 7 11 77 1328323 9298261 14611553 102280871