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220023020 = 22574213733
BaseRepresentation
bin11010001110101…
…00100011101100
3120100000022211202
431013110203230
5422311214040
633455505032
75311110350
oct1507244354
9510008752
10220023020
11103219608
1261828178
1336778049
1421315460
15144b2015
hexd1d48ec

220023020 has 48 divisors (see below), whose sum is σ = 529451328. Its totient is φ = 75237120.

The previous prime is 220023019. The next prime is 220023031. The reversal of 220023020 is 20320022.

220023020 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 = 220022992 and 220023010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57074 + ... + 60806.

It is an arithmetic number, because the mean of its divisors is an integer number (11030236).

Almost surely, 2220023020 is an apocalyptic number.

220023020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220023020 is an abundant number, since it is smaller than the sum of its proper divisors (309428308).

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

220023020 is a wasteful number, since it uses less digits than its factorization.

220023020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170 (or 4168 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 220023020 is about 14833.1729579345. The cubic root of 220023020 is about 603.7021286095.

Adding to 220023020 its reverse (20320022), we get a palindrome (240343042).

The spelling of 220023020 in words is "two hundred twenty million, twenty-three thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 421 842 1684 2105 2947 3733 4210 5894 7466 8420 11788 14735 14932 18665 26131 29470 37330 52262 58940 74660 104524 130655 261310 522620 1571593 3143186 6286372 7857965 11001151 15715930 22002302 31431860 44004604 55005755 110011510 220023020