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2230011220 = 225111500561
BaseRepresentation
bin1000010011101011…
…0100010101010100
312202102011022022011
42010322310111110
514031340324340
61005140514004
7106155532303
oct20472642524
95672138264
102230011220
11a44868488
125229ab904
1329700b788
1417225043a
15d0b990ea
hex84eb4554

2230011220 has 12 divisors (see below), whose sum is σ = 4683023604. Its totient is φ = 892004480.

The previous prime is 2230011181. The next prime is 2230011229. The reversal of 2230011220 is 221100322.

It can be written as a sum of positive squares in 2 ways, for example, as 704796304 + 1525214916 = 26548^2 + 39054^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2230011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2230011229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55750261 + ... + 55750300.

It is an arithmetic number, because the mean of its divisors is an integer number (390251967).

Almost surely, 22230011220 is an apocalyptic number.

2230011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2230011220 is an abundant number, since it is smaller than the sum of its proper divisors (2453012384).

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

2230011220 is a wasteful number, since it uses less digits than its factorization.

2230011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111500570 (or 111500568 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2230011220 is about 47222.9946106767. The cubic root of 2230011220 is about 1306.4787472999.

Adding to 2230011220 its reverse (221100322), we get a palindrome (2451111542).

The spelling of 2230011220 in words is "two billion, two hundred thirty million, eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 111500561 223001122 446002244 557502805 1115005610 2230011220