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16920301 = 21180191
BaseRepresentation
bin100000010001…
…0111011101101
31011211122021211
41000202323231
513312422201
61402354421
7263551216
oct100427355
934748254
1016920301
119607522
1257bba11
133675718
14236640d
151743651
hex1022eed

16920301 has 4 divisors (see below), whose sum is σ = 17000704. Its totient is φ = 16839900.

The previous prime is 16920289. The next prime is 16920313. The reversal of 16920301 is 10302961.

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: 10302961 = 61168901.

It is an interprime number because it is at equal distance from previous prime (16920289) and next prime (16920313).

It is a cyclic number.

It is not a de Polignac number, because 16920301 - 25 = 16920269 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 (16920391) 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, 39885 + ... + 40306.

It is an arithmetic number, because the mean of its divisors is an integer number (4250176).

Almost surely, 216920301 is an apocalyptic number.

It is an amenable number.

16920301 is a deficient number, since it is larger than the sum of its proper divisors (80403).

16920301 is an equidigital number, since it uses as much as digits as its factorization.

16920301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80402.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 16920301 is about 4113.4293478799. The cubic root of 16920301 is about 256.7257087613.

The spelling of 16920301 in words is "sixteen million, nine hundred twenty thousand, three hundred one".

Divisors: 1 211 80191 16920301