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20300023 = 174672557
BaseRepresentation
bin100110101110…
…0000011110111
31102012100101201
41031130003313
520144100043
62003033331
7334355512
oct115340367
942170351
1020300023
1110505787
12696b847
134289b63
1429a5d79
151baec4d
hex135c0f7

20300023 has 8 divisors (see below), whose sum is σ = 21548592. Its totient is φ = 19057536.

The previous prime is 20300017. The next prime is 20300039. The reversal of 20300023 is 32000302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20300023 - 25 = 20299991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20299982 and 20300009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6661 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (2693574).

Almost surely, 220300023 is an apocalyptic number.

20300023 is a deficient number, since it is larger than the sum of its proper divisors (1248569).

20300023 is a wasteful number, since it uses less digits than its factorization.

20300023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041.

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 20300023 is about 4505.5546828332. The cubic root of 20300023 is about 272.7923434397.

Adding to 20300023 its reverse (32000302), we get a palindrome (52300325).

The spelling of 20300023 in words is "twenty million, three hundred thousand, twenty-three".

Divisors: 1 17 467 2557 7939 43469 1194119 20300023