Search a number
-
+
220486260 = 2235171931367
BaseRepresentation
bin11010010010001…
…01101001110100
3120100212212021210
431021011221310
5422421030020
633513441420
75315050041
oct1511055164
9510785253
10220486260
11103505655
1261a10270
13368aab57
14213d61c8
15145543e0
hexd245a74

220486260 has 192 divisors, whose sum is σ = 712212480. Its totient is φ = 50595840.

The previous prime is 220486237. The next prime is 220486261. The reversal of 220486260 is 62684022.

It is a super-2 number, since 2×2204862602 = 97228381697575200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220486261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 600597 + ... + 600963.

It is an arithmetic number, because the mean of its divisors is an integer number (3709440).

Almost surely, 2220486260 is an apocalyptic number.

220486260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220486260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (356106240).

220486260 is an abundant number, since it is smaller than the sum of its proper divisors (491726220).

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

220486260 is a wasteful number, since it uses less digits than its factorization.

220486260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 220486260 is about 14848.7797478446. The cubic root of 220486260 is about 604.1255130008.

The spelling of 220486260 in words is "two hundred twenty million, four hundred eighty-six thousand, two hundred sixty".