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2220520032 = 25327710139
BaseRepresentation
bin1000010001011010…
…0111001001100000
312201202022002211200
42010112213021200
514021423120112
61004201241200
7106012052223
oct20426471140
95652262750
102220520032
11a3a475625
1251b793200
132950676a3
14170c9d5ba
15cee21cdc
hex845a7260

2220520032 has 36 divisors (see below), whose sum is σ = 6314604660. Its totient is φ = 740173248.

The previous prime is 2220520019. The next prime is 2220520033. The reversal of 2220520032 is 2300250222.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2220519987 and 2220520014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220520033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3854782 + ... + 3855357.

It is an arithmetic number, because the mean of its divisors is an integer number (175405685).

Almost surely, 22220520032 is an apocalyptic number.

It is an amenable number.

2220520032 is an abundant number, since it is smaller than the sum of its proper divisors (4094084628).

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

2220520032 is a wasteful number, since it uses less digits than its factorization.

2220520032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7710155 (or 7710144 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2220520032 is about 47122.3941666805. The cubic root of 2220520032 is about 1304.6226028089.

Adding to 2220520032 its reverse (2300250222), we get a palindrome (4520770254).

The spelling of 2220520032 in words is "two billion, two hundred twenty million, five hundred twenty thousand, thirty-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 7710139 15420278 23130417 30840556 46260834 61681112 69391251 92521668 123362224 138782502 185043336 246724448 277565004 370086672 555130008 740173344 1110260016 2220520032