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102468643 = 663715439
BaseRepresentation
bin1100001101110…
…00110000100011
321010210221112221
412012320300203
5202212444033
614100131511
72352653254
oct606706043
9233727487
10102468643
1152928232
122a396b97
13182c9344
14d874b2b
158ee112d
hex61b8c23

102468643 has 4 divisors (see below), whose sum is σ = 102490720. Its totient is φ = 102446568.

The previous prime is 102468599. The next prime is 102468647. The reversal of 102468643 is 346864201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346864201 = 1408724623.

It is a cyclic number.

It is not a de Polignac number, because 102468643 - 225 = 68914211 is a prime.

It is a super-2 number, since 2×1024686432 = 20999645596522898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102468599 and 102468608.

It is not an unprimeable number, because it can be changed into a prime (102468647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1083 + ... + 14356.

It is an arithmetic number, because the mean of its divisors is an integer number (25622680).

Almost surely, 2102468643 is an apocalyptic number.

102468643 is a deficient number, since it is larger than the sum of its proper divisors (22077).

102468643 is an equidigital number, since it uses as much as digits as its factorization.

102468643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22076.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 102468643 is about 10122.6796353535. The cubic root of 102468643 is about 467.9473529669.

The spelling of 102468643 in words is "one hundred two million, four hundred sixty-eight thousand, six hundred forty-three".

Divisors: 1 6637 15439 102468643