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23133013040 = 245289162663
BaseRepresentation
bin10101100010110101…
…011100010000110000
32012201011211211011202
4111202311130100300
5334334022404130
614343244430332
71446154236464
oct254265342060
965634754152
1023133013040
1198a0a8a0a5
1245972483a8
1322487c11c7
1411964344a4
15905d36145
hex562d5c430

23133013040 has 20 divisors (see below), whose sum is σ = 53784255504. Its totient is φ = 9253205184.

The previous prime is 23133013031. The next prime is 23133013051. The reversal of 23133013040 is 4031033132.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144581252 + ... + 144581411.

Almost surely, 223133013040 is an apocalyptic number.

23133013040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23133013040 is an abundant number, since it is smaller than the sum of its proper divisors (30651242464).

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

23133013040 is a wasteful number, since it uses less digits than its factorization.

23133013040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289162676 (or 289162670 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 23133013040 its reverse (4031033132), we get a palindrome (27164046172).

The spelling of 23133013040 in words is "twenty-three billion, one hundred thirty-three million, thirteen thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 289162663 578325326 1156650652 1445813315 2313301304 2891626630 4626602608 5783253260 11566506520 23133013040