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538007886 = 23313766393
BaseRepresentation
bin100000000100010…
…101100101001110
31101111100122002000
4200010111211032
52100212223021
6125215213130
716221664053
oct4004254516
91344318060
10538007886
11256767319
121302171a6
1387601c80
145164b02a
1532374b26
hex2011594e

538007886 has 32 divisors (see below), whose sum is σ = 1287541920. Its totient is φ = 165540672.

The previous prime is 538007879. The next prime is 538007887. The reversal of 538007886 is 688700835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538007887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382495 + ... + 383898.

It is an arithmetic number, because the mean of its divisors is an integer number (40235685).

Almost surely, 2538007886 is an apocalyptic number.

538007886 is an abundant number, since it is smaller than the sum of its proper divisors (749534034).

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

538007886 is a wasteful number, since it uses less digits than its factorization.

538007886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766417 (or 766411 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 538007886 is about 23194.9970036644. The cubic root of 538007886 is about 813.3226752537.

The spelling of 538007886 in words is "five hundred thirty-eight million, seven thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 9 13 18 26 27 39 54 78 117 234 351 702 766393 1532786 2299179 4598358 6897537 9963109 13795074 19926218 20692611 29889327 41385222 59778654 89667981 179335962 269003943 538007886