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23222212020 = 22325718430327
BaseRepresentation
bin10101101000001001…
…101101010110110100
32012221101200121011200
4111220021231112310
5340024341241040
614400152332500
71451316355020
oct255011552664
965841617150
1023222212020
119937373667
1246010a4130
132261122677
1411a4213380
1590daa5630
hex56826d5b4

23222212020 has 72 divisors (see below), whose sum is σ = 80503672704. Its totient is φ = 5307933888.

The previous prime is 23222211997. The next prime is 23222212031. The reversal of 23222212020 is 2021222232.

It is a super-2 number, since 2×232222120202 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23222211984 and 23222212002.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9213904 + ... + 9216423.

Almost surely, 223222212020 is an apocalyptic number.

23222212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23222212020 is an abundant number, since it is smaller than the sum of its proper divisors (57281460684).

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

23222212020 is a wasteful number, since it uses less digits than its factorization.

23222212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18430349 (or 18430344 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 23222212020 its reverse (2021222232), we get a palindrome (25243434252).

The spelling of 23222212020 in words is "twenty-three billion, two hundred twenty-two million, two hundred twelve thousand, twenty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 18430327 36860654 55290981 73721308 92151635 110581962 129012289 165872943 184303270 221163924 258024578 276454905 331745886 368606540 387036867 516049156 552909810 645061445 663491772 774073734 829364715 1105819620 1161110601 1290122890 1548147468 1658729430 1935184335 2322221202 2580245780 3317458860 3870368670 4644442404 5805553005 7740737340 11611106010 23222212020