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23130222020 = 2254326895607
BaseRepresentation
bin10101100010101010…
…110010110111000100
32012200222121000121122
4111202222302313010
5334332314101040
614343104533112
71446121433423
oct254252626704
965628530548
1023130222020
11989a453174
124596321198
132248054a09
141195d092ba
159059841b5
hex562ab2dc4

23130222020 has 24 divisors (see below), whose sum is σ = 49703083584. Its totient is φ = 9036923616.

The previous prime is 23130222019. The next prime is 23130222023. The reversal of 23130222020 is 2022203132.

It is a self number, because there is not a number n which added to its sum of digits gives 23130222020.

It is not an unprimeable number, because it can be changed into a prime (23130222023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13446944 + ... + 13448663.

It is an arithmetic number, because the mean of its divisors is an integer number (2070961816).

Almost surely, 223130222020 is an apocalyptic number.

23130222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23130222020 is an abundant number, since it is smaller than the sum of its proper divisors (26572861564).

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

23130222020 is a wasteful number, since it uses less digits than its factorization.

23130222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26895659 (or 26895657 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 23130222020 its reverse (2022203132), we get a palindrome (25152425152).

The spelling of 23130222020 in words is "twenty-three billion, one hundred thirty million, two hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 43 86 172 215 430 860 26895607 53791214 107582428 134478035 268956070 537912140 1156511101 2313022202 4626044404 5782555505 11565111010 23130222020