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2023001220 = 223543784109
BaseRepresentation
bin111100010010100…
…1000110010000100
312012222122002222010
41320211020302010
513120342014340
6532423534220
7101063140512
oct17045106204
95188562863
102023001220
11948a27839
124855ba370
1326316b856
141529654b2
15bc907b80
hex78948c84

2023001220 has 48 divisors (see below), whose sum is σ = 5796141120. Its totient is φ = 526920576.

The previous prime is 2023001153. The next prime is 2023001249. The reversal of 2023001220 is 221003202.

It is a super-2 number, since 2×20230012202 = 8185067872242976800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2023001196 and 2023001205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389475 + ... + 394634.

It is an arithmetic number, because the mean of its divisors is an integer number (120752940).

Almost surely, 22023001220 is an apocalyptic number.

2023001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2023001220 is an abundant number, since it is smaller than the sum of its proper divisors (3773139900).

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

2023001220 is a wasteful number, since it uses less digits than its factorization.

2023001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784164 (or 784162 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2023001220 is about 44977.7858503506. The cubic root of 2023001220 is about 1264.7326050350.

Adding to 2023001220 its reverse (221003202), we get a palindrome (2244004422).

The spelling of 2023001220 in words is "two billion, twenty-three million, one thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 43 60 86 129 172 215 258 430 516 645 860 1290 2580 784109 1568218 2352327 3136436 3920545 4704654 7841090 9409308 11761635 15682180 23523270 33716687 47046540 67433374 101150061 134866748 168583435 202300122 337166870 404600244 505750305 674333740 1011500610 2023001220