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220323020 = 22514997349
BaseRepresentation
bin11010010000111…
…01110011001100
3120100120120100212
431020131303030
5422400314040
633510141552
75313500111
oct1510356314
9510516325
10220323020
11103403a45
12619518b8
1336851768
1421392908
1514520d65
hexd21dccc

220323020 has 24 divisors (see below), whose sum is σ = 463050000. Its totient is φ = 88058432.

The previous prime is 220323017. The next prime is 220323071. The reversal of 220323020 is 20323022.

220323020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220322986 and 220323004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26306 + ... + 33654.

It is an arithmetic number, because the mean of its divisors is an integer number (19293750).

Almost surely, 2220323020 is an apocalyptic number.

220323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220323020 is an abundant number, since it is smaller than the sum of its proper divisors (242726980).

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

220323020 is a wasteful number, since it uses less digits than its factorization.

220323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8857 (or 8855 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 220323020 is about 14843.2819820955. The cubic root of 220323020 is about 603.9763853464.

Adding to 220323020 its reverse (20323022), we get a palindrome (240646042).

It can be divided in two parts, 22032 and 3020, that added together give a palindrome (25052).

The spelling of 220323020 in words is "two hundred twenty million, three hundred twenty-three thousand, twenty".

Divisors: 1 2 4 5 10 20 1499 2998 5996 7349 7495 14698 14990 29396 29980 36745 73490 146980 11016151 22032302 44064604 55080755 110161510 220323020