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538808620 = 22577352721
BaseRepresentation
bin100000000111011…
…001000100101100
31101112212022110211
4200013121010230
52100413333440
6125244312204
716231540420
oct4007310454
91345768424
10538808620
11257163989
12130542664
138782258c
14517b8b80
1532481eea
hex201d912c

538808620 has 48 divisors (see below), whose sum is σ = 1310879808. Its totient is φ = 182200320.

The previous prime is 538808597. The next prime is 538808651. The reversal of 538808620 is 26808835.

It is an unprimeable number.

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, 16141 + ... + 36580.

It is an arithmetic number, because the mean of its divisors is an integer number (27309996).

Almost surely, 2538808620 is an apocalyptic number.

It is an amenable number.

538808620 is an abundant number, since it is smaller than the sum of its proper divisors (772071188).

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

538808620 is a wasteful number, since it uses less digits than its factorization.

538808620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52810 (or 52808 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 538808620 is about 23212.2515064782. The cubic root of 538808620 is about 813.7259731164.

It can be divided in two parts, 53880 and 8620, that added together give a square (62500 = 2502).

The spelling of 538808620 in words is "five hundred thirty-eight million, eight hundred eight thousand, six hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 73 140 146 292 365 511 730 1022 1460 2044 2555 5110 10220 52721 105442 210884 263605 369047 527210 738094 1054420 1476188 1845235 3690470 3848633 7380940 7697266 15394532 19243165 26940431 38486330 53880862 76972660 107761724 134702155 269404310 538808620