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23133333040 = 245289166663
BaseRepresentation
bin10101100010110110…
…101010011000110000
32012201012110002010121
4111202312222120300
5334334113124130
614343255340024
71446160041436
oct254266523060
965635402117
1023133333040
1198a1188564
124597381614
1322488a3a5c
1411964b8d56
15905d9ad7a
hex562daa630

23133333040 has 20 divisors (see below), whose sum is σ = 53784999504. Its totient is φ = 9253333184.

The previous prime is 23133333037. The next prime is 23133333053. The reversal of 23133333040 is 4033333132.

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

It is a junction number, because it is equal to n+sod(n) for n = 23133332996 and 23133333014.

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, 144583252 + ... + 144583411.

Almost surely, 223133333040 is an apocalyptic number.

23133333040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23133333040 is an abundant number, since it is smaller than the sum of its proper divisors (30651666464).

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

23133333040 is a wasteful number, since it uses less digits than its factorization.

23133333040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289166676 (or 289166670 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 25.

Adding to 23133333040 its reverse (4033333132), we get a palindrome (27166666172).

The spelling of 23133333040 in words is "twenty-three billion, one hundred thirty-three million, three hundred thirty-three thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 40 80 289166663 578333326 1156666652 1445833315 2313333304 2891666630 4626666608 5783333260 11566666520 23133333040