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20237059218 = 235363638551
BaseRepresentation
bin10010110110001110…
…010000010010010010
31221020100121010100210
4102312032100102102
5312421141343333
613144034224550
71314331110435
oct226616202222
957210533323
1020237059218
118645324132
123b09425156
131ba683906c
14d9d99381c
157d6995a63
hex4b6390492

20237059218 has 16 divisors (see below), whose sum is σ = 41237781696. Its totient is φ = 6618409200.

The previous prime is 20237059211. The next prime is 20237059229. The reversal of 20237059218 is 81295073202.

It is not an unprimeable number, because it can be changed into a prime (20237059211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31818958 + ... + 31819593.

It is an arithmetic number, because the mean of its divisors is an integer number (2577361356).

Almost surely, 220237059218 is an apocalyptic number.

20237059218 is an abundant number, since it is smaller than the sum of its proper divisors (21000722478).

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

20237059218 is a wasteful number, since it uses less digits than its factorization.

20237059218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63638609.

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 20237059218 in words is "twenty billion, two hundred thirty-seven million, fifty-nine thousand, two hundred eighteen".

Divisors: 1 2 3 6 53 106 159 318 63638551 127277102 190915653 381831306 3372843203 6745686406 10118529609 20237059218