Search a number
-
+
2221240230 = 23251117191691
BaseRepresentation
bin1000010001100101…
…0110111110100110
312201210122200202200
42010121112332212
514022114141410
61004224515330
7106021142016
oct20431267646
95653580680
102221240230
11a3a917730
1251ba7bb46
1329525a441
14171009c46
15d00153c0
hex84656fa6

2221240230 has 192 divisors, whose sum is σ = 6715478016. Its totient is φ = 503424000.

The previous prime is 2221240223. The next prime is 2221240237. The reversal of 2221240230 is 320421222.

2221240230 is a `hidden beast` number, since 22 + 212 + 402 + 30 = 666.

2221240230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2221240223) and next prime (2221240237).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221240237) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3214185 + ... + 3214875.

It is an arithmetic number, because the mean of its divisors is an integer number (34976448).

Almost surely, 22221240230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221240230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3357739008).

2221240230 is an abundant number, since it is smaller than the sum of its proper divisors (4494237786).

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

2221240230 is a wasteful number, since it uses less digits than its factorization.

2221240230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2221240230 is about 47130.0353278034. The cubic root of 2221240230 is about 1304.7636335904.

Adding to 2221240230 its reverse (320421222), we get a palindrome (2541661452).

The spelling of 2221240230 in words is "two billion, two hundred twenty-one million, two hundred forty thousand, two hundred thirty".