Search a number
-
+
431930394553800 = 2335237434191079887
BaseRepresentation
bin110001000110101101010000…
…1101111000010110111001000
32002122100010211211212200210010
41202031122201233002313020
5423103221422001210200
64130350030044551520
7156656640555316602
oct14215324157026710
92078303754780703
10431930394553800
1111569871936158a
124053b0072525a0
1315701b2775c3bc
147893785016172
1534e077a25e150
hex188d6a1bc2dc8

431930394553800 has 384 divisors, whose sum is σ = 1410513421363200. Its totient is φ = 109200836828160.

The previous prime is 431930394553799. The next prime is 431930394553811. The reversal of 431930394553800 is 8355493039134.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 399437457 + ... + 400517343.

It is an arithmetic number, because the mean of its divisors is an integer number (3673212034800).

Almost surely, 2431930394553800 is an apocalyptic number.

431930394553800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 431930394553800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705256710681600).

431930394553800 is an abundant number, since it is smaller than the sum of its proper divisors (978583026809400).

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

431930394553800 is a wasteful number, since it uses less digits than its factorization.

431930394553800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080405 (or 1080396 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 57.

The spelling of 431930394553800 in words is "four hundred thirty-one trillion, nine hundred thirty billion, three hundred ninety-four million, five hundred fifty-three thousand, eight hundred".