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278030053 = 7172579091
BaseRepresentation
bin10000100100100…
…110011011100101
3201101011101112101
4100210212123211
51032133430203
643331052101
76614134150
oct2044463345
9641141471
10278030053
11132a39104
1279141031
13457a7b32
1428cd4c97
151961e41d
hex109266e5

278030053 has 16 divisors (see below), whose sum is σ = 337785984. Its totient is φ = 223395840.

The previous prime is 278030017. The next prime is 278030057. The reversal of 278030053 is 350030872.

It is a cyclic number.

It is not a de Polignac number, because 278030053 - 29 = 278029541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278030057) 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 15 ways as a sum of consecutive naturals, for example, 26038 + ... + 35128.

It is an arithmetic number, because the mean of its divisors is an integer number (21111624).

Almost surely, 2278030053 is an apocalyptic number.

It is an amenable number.

278030053 is a deficient number, since it is larger than the sum of its proper divisors (59755931).

278030053 is a wasteful number, since it uses less digits than its factorization.

278030053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9372.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 278030053 is about 16674.2332057579. The cubic root of 278030053 is about 652.6754052491.

The spelling of 278030053 in words is "two hundred seventy-eight million, thirty thousand, fifty-three".

Divisors: 1 7 17 119 257 1799 4369 9091 30583 63637 154547 1081829 2336387 16354709 39718579 278030053