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20230023220 = 22511183150221
BaseRepresentation
bin10010110101110011…
…011010100000110100
31221012212100122210021
4102311303122200310
5312412341220340
613143223334524
71314214234351
oct226563324064
957185318707
1020230023220
118641358960
123b06bb1444
131ba5244654
14d9ca81628
157d6055e4a
hex4b5cda834

20230023220 has 48 divisors (see below), whose sum is σ = 46371378816. Its totient is φ = 7352208000.

The previous prime is 20230023217. The next prime is 20230023227. The reversal of 20230023220 is 2232003202.

It is a junction number, because it is equal to n+sod(n) for n = 20230023194 and 20230023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230023227) 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 15 ways as a sum of consecutive naturals, for example, 377710 + ... + 427930.

It is an arithmetic number, because the mean of its divisors is an integer number (966070392).

Almost surely, 220230023220 is an apocalyptic number.

20230023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20230023220 is an abundant number, since it is smaller than the sum of its proper divisors (26141355596).

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

20230023220 is a wasteful number, since it uses less digits than its factorization.

20230023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52072 (or 52070 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20230023220 its reverse (2232003202), we get a palindrome (22462026422).

The spelling of 20230023220 in words is "twenty billion, two hundred thirty million, twenty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 1831 3662 7324 9155 18310 20141 36620 40282 50221 80564 100442 100705 200884 201410 251105 402820 502210 552431 1004420 1104862 2209724 2762155 5524310 11048620 91954651 183909302 367818604 459773255 919546510 1011501161 1839093020 2023002322 4046004644 5057505805 10115011610 20230023220