Search a number
-
+
20342011220 = 2251017100561
BaseRepresentation
bin10010111100011110…
…100111010101010100
31221111200002020102222
4102330132213111110
5313130023324340
613202303521512
71320044146106
oct227436472524
957450066388
1020342011220
118699598123
123b385b9298
131bc24c483b
14dad8b3576
157e0cc78b5
hex4bc7a7554

20342011220 has 12 divisors (see below), whose sum is σ = 42718223604. Its totient is φ = 8136804480.

The previous prime is 20342011199. The next prime is 20342011229. The reversal of 20342011220 is 2211024302.

It can be written as a sum of positive squares in 2 ways, for example, as 3138016324 + 17203994896 = 56018^2 + 131164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342011229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508550261 + ... + 508550300.

It is an arithmetic number, because the mean of its divisors is an integer number (3559851967).

Almost surely, 220342011220 is an apocalyptic number.

20342011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20342011220 is an abundant number, since it is smaller than the sum of its proper divisors (22376212384).

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

20342011220 is a wasteful number, since it uses less digits than its factorization.

20342011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017100570 (or 1017100568 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20342011220 its reverse (2211024302), we get a palindrome (22553035522).

The spelling of 20342011220 in words is "twenty billion, three hundred forty-two million, eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 1017100561 2034201122 4068402244 5085502805 10171005610 20342011220