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85150818 = 23319149557
BaseRepresentation
bin1010001001101…
…00110001100010
312221020002222000
411010310301202
5133244311233
612241024430
72052525054
oct504646142
9187202860
1085150818
114407a085
1224625116
13148449cc
14b4478d4
15771ed13
hex5134c62

85150818 has 64 divisors (see below), whose sum is σ = 200880000. Its totient is φ = 26661312.

The previous prime is 85150789. The next prime is 85150823. The reversal of 85150818 is 81805158.

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 31 ways as a sum of consecutive naturals, for example, 152596 + ... + 153152.

It is an arithmetic number, because the mean of its divisors is an integer number (3138750).

Almost surely, 285150818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85150818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100440000).

85150818 is an abundant number, since it is smaller than the sum of its proper divisors (115729182).

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

85150818 is a wasteful number, since it uses less digits than its factorization.

85150818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

The square root of 85150818 is about 9227.7200867820. The cubic root of 85150818 is about 439.9428610375.

The spelling of 85150818 in words is "eighty-five million, one hundred fifty thousand, eight hundred eighteen".

Divisors: 1 2 3 6 9 18 19 27 38 54 57 114 149 171 298 342 447 513 557 894 1026 1114 1341 1671 2682 2831 3342 4023 5013 5662 8046 8493 10026 10583 15039 16986 21166 25479 30078 31749 50958 63498 76437 82993 95247 152874 165986 190494 248979 285741 497958 571482 746937 1493874 1576867 2240811 3153734 4481622 4730601 9461202 14191803 28383606 42575409 85150818