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215068968 = 23327937811
BaseRepresentation
bin11001101000110…
…11000100101000
3112222200122011100
430310123010220
5420024201333
633201401400
75221025142
oct1464330450
9488618140
10215068968
11100445554
1260039260
133573215a
14207c5c92
1513d34213
hexcd1b128

215068968 has 48 divisors (see below), whose sum is σ = 589867200. Its totient is φ = 70780320.

The previous prime is 215068957. The next prime is 215068991. The reversal of 215068968 is 869860512.

215068968 is a `hidden beast` number, since 2 + 1 + 506 + 89 + 68 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13218 + ... + 24593.

It is an arithmetic number, because the mean of its divisors is an integer number (12288900).

Almost surely, 2215068968 is an apocalyptic number.

It is an amenable number.

215068968 is an abundant number, since it is smaller than the sum of its proper divisors (374798232).

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

215068968 is a wasteful number, since it uses less digits than its factorization.

215068968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37902 (or 37895 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 215068968 is about 14665.2298993231. The cubic root of 215068968 is about 599.1366917606.

The spelling of 215068968 in words is "two hundred fifteen million, sixty-eight thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 79 158 237 316 474 632 711 948 1422 1896 2844 5688 37811 75622 113433 151244 226866 302488 340299 453732 680598 907464 1361196 2722392 2987069 5974138 8961207 11948276 17922414 23896552 26883621 35844828 53767242 71689656 107534484 215068968