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219282020 = 22510964101
BaseRepresentation
bin11010001000111…
…11101001100100
3120021121200101022
431010133221210
5422114011040
633431550312
75301603116
oct1504375144
9507550338
10219282020
11102862911
126152b398
1336578999
14211a13b6
15143b76b5
hexd11fa64

219282020 has 12 divisors (see below), whose sum is σ = 460492284. Its totient is φ = 87712800.

The previous prime is 219282013. The next prime is 219282029. The reversal of 219282020 is 20282912.

219282020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 146555236 + 72726784 = 12106^2 + 8528^2 .

It is not an unprimeable number, because it can be changed into a prime (219282029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5482031 + ... + 5482070.

It is an arithmetic number, because the mean of its divisors is an integer number (38374357).

Almost surely, 2219282020 is an apocalyptic number.

219282020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219282020 is an abundant number, since it is smaller than the sum of its proper divisors (241210264).

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

219282020 is a wasteful number, since it uses less digits than its factorization.

219282020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10964110 (or 10964108 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 219282020 is about 14808.1740940603. The cubic root of 219282020 is about 603.0236444355.

The spelling of 219282020 in words is "two hundred nineteen million, two hundred eighty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 10964101 21928202 43856404 54820505 109641010 219282020