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20120033332 = 2276111779879
BaseRepresentation
bin10010101111001111…
…110101100000110100
31220221012101121000201
4102233033311200310
5312201212031312
613124254050244
71311410314210
oct225717654064
956835347021
1020120033332
118595263923
123a961a9984
131b88513a89
14d8c20d940
157cb57b557
hex4af3f5834

20120033332 has 24 divisors (see below), whose sum is σ = 40899743360. Its totient is φ = 8481512160.

The previous prime is 20120033303. The next prime is 20120033333. The reversal of 20120033332 is 23333002102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120033333) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5888232 + ... + 5891647.

Almost surely, 220120033332 is an apocalyptic number.

It is an amenable number.

20120033332 is an abundant number, since it is smaller than the sum of its proper divisors (20779710028).

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

20120033332 is a wasteful number, since it uses less digits than its factorization.

20120033332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11779951 (or 11779949 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20120033332 its reverse (23333002102), we get a palindrome (43453035434).

The spelling of 20120033332 in words is "twenty billion, one hundred twenty million, thirty-three thousand, three hundred thirty-two".

Divisors: 1 2 4 7 14 28 61 122 244 427 854 1708 11779879 23559758 47119516 82459153 164918306 329836612 718572619 1437145238 2874290476 5030008333 10060016666 20120033332