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20220222020 = 2256971145031
BaseRepresentation
bin10010110101001110…
…000001101001000100
31221012011220201001212
4102311032001221010
5312402334101040
613142233310552
71314035023415
oct226516015104
957164821055
1020220222020
118636874099
123b03865458
131ba31c241b
14d9b64d80c
157d526bd65
hex4b5381a44

20220222020 has 24 divisors (see below), whose sum is σ = 42468850368. Its totient is φ = 8086872800.

The previous prime is 20220222017. The next prime is 20220222031. The reversal of 20220222020 is 2022202202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20220221986 and 20220222004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66905 + ... + 211935.

It is an arithmetic number, because the mean of its divisors is an integer number (1769535432).

Almost surely, 220220222020 is an apocalyptic number.

20220222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220222020 is an abundant number, since it is smaller than the sum of its proper divisors (22248628348).

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

20220222020 is a wasteful number, since it uses less digits than its factorization.

20220222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152011 (or 152009 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20220222020 its reverse (2022202202), we get a palindrome (22242424222).

The spelling of 20220222020 in words is "twenty billion, two hundred twenty million, two hundred twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 6971 13942 27884 34855 69710 139420 145031 290062 580124 725155 1450310 2900620 1011011101 2022022202 4044044404 5055055505 10110111010 20220222020