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220386260 = 22511019313
BaseRepresentation
bin11010010001011…
…01001111010100
3120100200210010002
431020231033110
5422404330020
633511350432
75314152353
oct1510551724
9510623102
10220386260
11103447506
1261982418
1336874493
14213ab99a
1514534975
hexd22d3d4

220386260 has 12 divisors (see below), whose sum is σ = 462811188. Its totient is φ = 88154496.

The previous prime is 220386259. The next prime is 220386277. The reversal of 220386260 is 62683022.

220386260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31158724 + 189227536 = 5582^2 + 13756^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5509637 + ... + 5509676.

It is an arithmetic number, because the mean of its divisors is an integer number (38567599).

Almost surely, 2220386260 is an apocalyptic number.

220386260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220386260 is an abundant number, since it is smaller than the sum of its proper divisors (242424928).

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

220386260 is a wasteful number, since it uses less digits than its factorization.

220386260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11019322 (or 11019320 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 220386260 is about 14845.4120858937. The cubic root of 220386260 is about 604.0341668902.

The spelling of 220386260 in words is "two hundred twenty million, three hundred eighty-six thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 11019313 22038626 44077252 55096565 110193130 220386260