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220253880 = 23357113197
BaseRepresentation
bin11010010000011…
…00111010111000
3120100110001112010
431020030322320
5422341111010
633504445520
75313061410
oct1510147270
9510401463
10220253880
11103367000
12619198a0
1336829152
1421375640
151450a620
hexd20ceb8

220253880 has 256 divisors, whose sum is σ = 834831360. Its totient is φ = 45534720.

The previous prime is 220253867. The next prime is 220253881. The reversal of 220253880 is 88352022.

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 (220253881) 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, 1117942 + ... + 1118138.

It is an arithmetic number, because the mean of its divisors is an integer number (3261060).

Almost surely, 2220253880 is an apocalyptic number.

220253880 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 220253880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417415680).

220253880 is an abundant number, since it is smaller than the sum of its proper divisors (614577480).

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

220253880 is a wasteful number, since it uses less digits than its factorization.

220253880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 220253880 is about 14840.9527996015. The cubic root of 220253880 is about 603.9132003976.

The spelling of 220253880 in words is "two hundred twenty million, two hundred fifty-three thousand, eight hundred eighty".