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38505016806 = 23131385112721
BaseRepresentation
bin100011110111000100…
…111110110111100110
310200101110222112002120
4203313010332313212
51112324241014211
625404452050410
72532122146134
oct436704766746
9120343875076
1038505016806
111536a095043
127567303a06
133828428919
141c13c12754
15100562dd06
hex8f713ede6

38505016806 has 32 divisors (see below), whose sum is σ = 77624148096. Its totient is φ = 12732720000.

The previous prime is 38505016783. The next prime is 38505016807. The reversal of 38505016806 is 60861050583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38505016807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3020526 + ... + 3033246.

It is an arithmetic number, because the mean of its divisors is an integer number (2425754628).

Almost surely, 238505016806 is an apocalyptic number.

38505016806 is an abundant number, since it is smaller than the sum of its proper divisors (39119131290).

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

38505016806 is a wasteful number, since it uses less digits than its factorization.

38505016806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16708.

The product of its (nonzero) digits is 172800, while the sum is 42.

It can be divided in two parts, 385050 and 16806, that added together give a triangular number (401856 = T896).

The spelling of 38505016806 in words is "thirty-eight billion, five hundred five million, sixteen thousand, eight hundred six".

Divisors: 1 2 3 6 131 262 393 786 3851 7702 11553 12721 23106 25442 38163 76326 504481 1008962 1513443 1666451 3026886 3332902 4999353 9998706 48988571 97977142 146965713 293931426 6417502801 12835005602 19252508403 38505016806