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208248280 = 2355206207
BaseRepresentation
bin11000110100110…
…01110111011000
3112111212002221021
430122121313120
5411302421110
632355252224
75106036562
oct1432316730
9474762837
10208248280
11a7607019
12598aa074
13341b4746
141d92c332
15134382da
hexc699dd8

208248280 has 16 divisors (see below), whose sum is σ = 468558720. Its totient is φ = 83299296.

The previous prime is 208248277. The next prime is 208248281. The reversal of 208248280 is 82842802.

It is a super-2 number, since 2×2082482802 = 86734692245916800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208248281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2603064 + ... + 2603143.

It is an arithmetic number, because the mean of its divisors is an integer number (29284920).

Almost surely, 2208248280 is an apocalyptic number.

208248280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208248280 is an abundant number, since it is smaller than the sum of its proper divisors (260310440).

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

208248280 is a wasteful number, since it uses less digits than its factorization.

208248280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5206218 (or 5206214 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 208248280 is about 14430.8100950709. The cubic root of 208248280 is about 592.7348662655.

The spelling of 208248280 in words is "two hundred eight million, two hundred forty-eight thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 5206207 10412414 20824828 26031035 41649656 52062070 104124140 208248280