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8490219754 = 2103140929251
BaseRepresentation
bin1111110100000111…
…00111100011101010
3210220200211211222111
413322003213203222
5114341444013004
63522250512534
7420252451162
oct77203474352
923820754874
108490219754
113667564845
12178b43574a
13a53c82693
145a78355a2
1534a580a04
hex1fa0e78ea

8490219754 has 16 divisors (see below), whose sum is σ = 12868539840. Its totient is φ = 4200768000.

The previous prime is 8490219739. The next prime is 8490219757. The reversal of 8490219754 is 4579120948.

It is a junction number, because it is equal to n+sod(n) for n = 8490219698 and 8490219707.

It is not an unprimeable number, because it can be changed into a prime (8490219757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275629 + ... + 304879.

It is an arithmetic number, because the mean of its divisors is an integer number (804283740).

Almost surely, 28490219754 is an apocalyptic number.

8490219754 is a deficient number, since it is larger than the sum of its proper divisors (4378320086).

8490219754 is a wasteful number, since it uses less digits than its factorization.

8490219754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30765.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 8490219754 is about 92142.3884756630. The cubic root of 8490219754 is about 2040.0445134783.

The spelling of 8490219754 in words is "eight billion, four hundred ninety million, two hundred nineteen thousand, seven hundred fifty-four".

Divisors: 1 2 103 206 1409 2818 29251 58502 145127 290254 3012853 6025706 41214659 82429318 4245109877 8490219754