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85000422490 = 25191198722397
BaseRepresentation
bin100111100101001101…
…0111000010001011010
322010101211021212002221
41033022122320101122
52343040102004430
6103014302014254
76066250445554
oct1171232702132
9263354255087
1085000422490
1133059582555
121458257738a
1380280b0aa9
144184d0a4d4
1523274aa57a
hex13ca6b845a

85000422490 has 32 divisors (see below), whose sum is σ = 153886086144. Its totient is φ = 33803626560.

The previous prime is 85000422413. The next prime is 85000422491. The reversal of 85000422490 is 9422400058.

It is not an unprimeable number, because it can be changed into a prime (85000422491) 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, 3783972 + ... + 3806368.

It is an arithmetic number, because the mean of its divisors is an integer number (4808940192).

Almost surely, 285000422490 is an apocalyptic number.

85000422490 is a deficient number, since it is larger than the sum of its proper divisors (68885663654).

85000422490 is a wasteful number, since it uses less digits than its factorization.

85000422490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24582.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 85000422490 in words is "eighty-five billion, four hundred twenty-two thousand, four hundred ninety".

Divisors: 1 2 5 10 191 382 955 1910 1987 3974 9935 19870 22397 44794 111985 223970 379517 759034 1897585 3795170 4277827 8555654 21389135 42778270 44502839 89005678 222514195 445028390 8500042249 17000084498 42500211245 85000422490