[go: up one dir, main page]

Search a number
-
+
122444220 = 22354347459
BaseRepresentation
bin1110100110001…
…01100110111100
322112101210220010
413103011212330
5222321203340
620052223220
73014521143
oct723054674
9275353803
10122444220
1163131178
123500ab10
131c4a1602
141239475a
15ab39b80
hex74c59bc

122444220 has 48 divisors (see below), whose sum is σ = 350824320. Its totient is φ = 31891776.

The previous prime is 122444209. The next prime is 122444221. The reversal of 122444220 is 22444221.

It is a super-2 number, since 2×1224442202 = 29985174022816800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122444221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21150 + ... + 26309.

It is an arithmetic number, because the mean of its divisors is an integer number (7308840).

Almost surely, 2122444220 is an apocalyptic number.

122444220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122444220 is an abundant number, since it is smaller than the sum of its proper divisors (228380100).

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

122444220 is a wasteful number, since it uses less digits than its factorization.

122444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47514 (or 47512 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 122444220 is about 11065.4516401275. The cubic root of 122444220 is about 496.5688009406.

Adding to 122444220 its reverse (22444221), we get a palindrome (144888441).

Subtracting from 122444220 its reverse (22444221), we obtain a palindrome (99999999).

The spelling of 122444220 in words is "one hundred twenty-two million, four hundred forty-four thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 43 60 86 129 172 215 258 430 516 645 860 1290 2580 47459 94918 142377 189836 237295 284754 474590 569508 711885 949180 1423770 2040737 2847540 4081474 6122211 8162948 10203685 12244422 20407370 24488844 30611055 40814740 61222110 122444220