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43238413 = 231879931
BaseRepresentation
bin1010010011110…
…0010000001101
310000100201221201
42210330100031
542032112123
64142425501
71033343341
oct244742015
9100321851
1043238413
1122452729
1212592291
138c5b87a
145a57621
hex293c40d

43238413 has 4 divisors (see below), whose sum is σ = 45118368. Its totient is φ = 41358460.

The previous prime is 43238401. The next prime is 43238423. The reversal of 43238413 is 31483234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31483234 = 215741617.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-43238413 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 (43238423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 939943 + ... + 939988.

It is an arithmetic number, because the mean of its divisors is an integer number (11279592).

Almost surely, 243238413 is an apocalyptic number.

It is an amenable number.

43238413 is a deficient number, since it is larger than the sum of its proper divisors (1879955).

43238413 is a wasteful number, since it uses less digits than its factorization.

43238413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879954.

The product of its digits is 6912, while the sum is 28.

The square root of 43238413 is about 6575.5922166752. The cubic root of 43238413 is about 350.9860980471.

The spelling of 43238413 in words is "forty-three million, two hundred thirty-eight thousand, four hundred thirteen".

Divisors: 1 23 1879931 43238413