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102448943 = 131782053
BaseRepresentation
bin1100001101100…
…11111100101111
321010202221112022
412012303330233
5202211331233
614055500355
72352541652
oct606637457
9233687468
10102448943
1152914453
122a3876bb
13182c039c
14d86b899
158eda398
hex61b3f2f

102448943 has 4 divisors (see below), whose sum is σ = 103231128. Its totient is φ = 101666760.

The previous prime is 102448939. The next prime is 102448979. The reversal of 102448943 is 349844201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 349844201 = 749977743.

It is a cyclic number.

It is not a de Polignac number, because 102448943 - 22 = 102448939 is a prime.

It is a super-3 number, since 3×1024489433 (a number of 25 digits) contains 333 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 (102448043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390896 + ... + 391157.

It is an arithmetic number, because the mean of its divisors is an integer number (25807782).

Almost surely, 2102448943 is an apocalyptic number.

102448943 is a deficient number, since it is larger than the sum of its proper divisors (782185).

102448943 is an equidigital number, since it uses as much as digits as its factorization.

102448943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782184.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 102448943 is about 10121.7065260755. The cubic root of 102448943 is about 467.9173628047.

The spelling of 102448943 in words is "one hundred two million, four hundred forty-eight thousand, nine hundred forty-three".

Divisors: 1 131 782053 102448943