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23143230404 = 227826543943
BaseRepresentation
bin10101100011011100…
…011010101111000100
32012201220001220202122
4111203130122233010
5334344131333104
614344251425112
71446340132640
oct254334325704
965656056678
1023143230404
1198a68285a8
12459a755198
13224a95a998
141197933c20
15906ba36be
hex56371abc4

23143230404 has 12 divisors (see below), whose sum is σ = 46286460864. Its totient is φ = 9918527304.

The previous prime is 23143230401. The next prime is 23143230413. The reversal of 23143230404 is 40403234132.

23143230404 is an admirable number.

It is a super-2 number, since 2×231432304042 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23143230401) 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, 413271944 + ... + 413271999.

It is an arithmetic number, because the mean of its divisors is an integer number (3857205072).

Almost surely, 223143230404 is an apocalyptic number.

It is an amenable number.

23143230404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23143230404 is a wasteful number, since it uses less digits than its factorization.

23143230404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826543954 (or 826543952 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 23143230404 its reverse (40403234132), we get a palindrome (63546464536).

The spelling of 23143230404 in words is "twenty-three billion, one hundred forty-three million, two hundred thirty thousand, four hundred four".

Divisors: 1 2 4 7 14 28 826543943 1653087886 3306175772 5785807601 11571615202 23143230404