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2123230220 = 225769913789
BaseRepresentation
bin111111010001101…
…1110110000001100
312110222020021022022
41332203132300030
513322021331340
6550404105312
7103421105366
oct17643366014
95428207268
102123230220
1199a565321
124b3095238
1327ab62657
14161db5d36
15c66053b5
hex7e8dec0c

2123230220 has 24 divisors (see below), whose sum is σ = 4459686000. Its totient is φ = 849120192.

The previous prime is 2123230129. The next prime is 2123230231. The reversal of 2123230220 is 220323212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147086 + ... + 160874.

It is an arithmetic number, because the mean of its divisors is an integer number (185820250).

Almost surely, 22123230220 is an apocalyptic number.

2123230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123230220 is an abundant number, since it is smaller than the sum of its proper divisors (2336455780).

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

2123230220 is a wasteful number, since it uses less digits than its factorization.

2123230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21497 (or 21495 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2123230220 is about 46078.5223287379. The cubic root of 2123230220 is about 1285.2837861822.

Adding to 2123230220 its reverse (220323212), we get a palindrome (2343553432).

The spelling of 2123230220 in words is "two billion, one hundred twenty-three million, two hundred thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 7699 13789 15398 27578 30796 38495 55156 68945 76990 137890 153980 275780 106161511 212323022 424646044 530807555 1061615110 2123230220