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85078474 = 21313124979
BaseRepresentation
bin1010001001000…
…11000111001010
312221002102201121
411010203013022
5133240002344
612235305454
72052104125
oct504430712
9187072647
1085078474
114402a798
12245ab28a
131481aac0
14b4293bc
157708684
hex51231ca

85078474 has 16 divisors (see below), whose sum is σ = 138489120. Its totient is φ = 38965680.

The previous prime is 85078451. The next prime is 85078493. The reversal of 85078474 is 47487058.

It is a self number, because there is not a number n which added to its sum of digits gives 85078474.

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 7 ways as a sum of consecutive naturals, for example, 9084 + ... + 15895.

It is an arithmetic number, because the mean of its divisors is an integer number (8655570).

Almost surely, 285078474 is an apocalyptic number.

85078474 is a deficient number, since it is larger than the sum of its proper divisors (53410646).

85078474 is a wasteful number, since it uses less digits than its factorization.

85078474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25125.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 85078474 is about 9223.7993256575. The cubic root of 85078474 is about 439.8182341508.

The spelling of 85078474 in words is "eighty-five million, seventy-eight thousand, four hundred seventy-four".

Divisors: 1 2 13 26 131 262 1703 3406 24979 49958 324727 649454 3272249 6544498 42539237 85078474