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20230023 = 3112921139
BaseRepresentation
bin100110100101…
…0111110000111
31102001210101010
41031022332013
520134330043
62001333303
7333644442
oct115127607
942053333
1020230023
1110468130
126937233
134264038
142988659
151b99133
hex134af87

20230023 has 16 divisors (see below), whose sum is σ = 30441600. Its totient is φ = 11837280.

The previous prime is 20229991. The next prime is 20230031. The reversal of 20230023 is 32003202.

It is not a de Polignac number, because 20230023 - 25 = 20229991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20229990 and 20230008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9613 + ... + 11526.

It is an arithmetic number, because the mean of its divisors is an integer number (1902600).

Almost surely, 220230023 is an apocalyptic number.

20230023 is a deficient number, since it is larger than the sum of its proper divisors (10211577).

20230023 is a wasteful number, since it uses less digits than its factorization.

20230023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21182.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 20230023 is about 4497.7797856276. The cubic root of 20230023 is about 272.4784282786.

Adding to 20230023 its reverse (32003202), we get a palindrome (52233225).

The spelling of 20230023 in words is "twenty million, two hundred thirty thousand, twenty-three".

Divisors: 1 3 11 29 33 87 319 957 21139 63417 232529 613031 697587 1839093 6743341 20230023