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213480872 = 231110124019
BaseRepresentation
bin11001011100101…
…11010110101000
3112212200221200222
430232113112220
5414122341442
633103345212
75201362133
oct1456272650
9485627628
10213480872
11aa560380
125b5b2208
13352c7357
14204d121a
1513b1d8d2
hexcb975a8

213480872 has 32 divisors (see below), whose sum is σ = 441007200. Its totient is φ = 96072000.

The previous prime is 213480863. The next prime is 213480887. The reversal of 213480872 is 278084312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3122 + ... + 20897.

It is an arithmetic number, because the mean of its divisors is an integer number (13781475).

Almost surely, 2213480872 is an apocalyptic number.

213480872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213480872 is an abundant number, since it is smaller than the sum of its proper divisors (227526328).

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

213480872 is a wasteful number, since it uses less digits than its factorization.

213480872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24137 (or 24133 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 213480872 is about 14610.9846348561. The cubic root of 213480872 is about 597.6583470656.

The spelling of 213480872 in words is "two hundred thirteen million, four hundred eighty thousand, eight hundred seventy-two".

Divisors: 1 2 4 8 11 22 44 88 101 202 404 808 1111 2222 4444 8888 24019 48038 96076 192152 264209 528418 1056836 2113672 2425919 4851838 9703676 19407352 26685109 53370218 106740436 213480872