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33120103220 = 2251656005161
BaseRepresentation
bin11110110110000111…
…001010101100110100
310011111012022120100122
4132312013022230310
51020312221300340
623114250431112
72251514142461
oct366607125464
9104435276318
1033120103220
1113056486836
126503a32498
13317a90b519
141862996668
15cdc9e3db5
hex7b61cab34

33120103220 has 12 divisors (see below), whose sum is σ = 69552216804. Its totient is φ = 13248041280.

The previous prime is 33120103207. The next prime is 33120103241. The reversal of 33120103220 is 2230102133.

It can be written as a sum of positive squares in 2 ways, for example, as 25786578724 + 7333524496 = 160582^2 + 85636^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828002561 + ... + 828002600.

It is an arithmetic number, because the mean of its divisors is an integer number (5796018067).

Almost surely, 233120103220 is an apocalyptic number.

It is an amenable number.

33120103220 is an abundant number, since it is smaller than the sum of its proper divisors (36432113584).

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

33120103220 is a wasteful number, since it uses less digits than its factorization.

33120103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656005170 (or 1656005168 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 33120103220 its reverse (2230102133), we get a palindrome (35350205353).

The spelling of 33120103220 in words is "thirty-three billion, one hundred twenty million, one hundred three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1656005161 3312010322 6624020644 8280025805 16560051610 33120103220