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BaseRepresentation
bin10011000100111…
…001001011100101
3211022020012220202
4103010321023211
51123413044033
651431440245
710634244032
oct2304711345
9738205822
10320049893
11154729249
128b226085
13513cab47
1430712389
151d16e8e8
hex131392e5

320049893 has 4 divisors (see below), whose sum is σ = 320584800. Its totient is φ = 319514988.

The previous prime is 320049839. The next prime is 320049907. The reversal of 320049893 is 398940023.

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: 398940023 = 3112869033.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-320049893 is a prime.

It is a super-2 number, since 2×3200498932 = 204863868018622898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320049193) 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, 266555 + ... + 267752.

It is an arithmetic number, because the mean of its divisors is an integer number (80146200).

Almost surely, 2320049893 is an apocalyptic number.

It is an amenable number.

320049893 is a deficient number, since it is larger than the sum of its proper divisors (534907).

320049893 is an equidigital number, since it uses as much as digits as its factorization.

320049893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534906.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 320049893 is about 17889.9383173895. The cubic root of 320049893 is about 684.0259250858.

The spelling of 320049893 in words is "three hundred twenty million, forty-nine thousand, eight hundred ninety-three".

Divisors: 1 599 534307 320049893