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85729404 = 22346115497
BaseRepresentation
bin1010001110000…
…10000001111100
312222022111122010
411013002001330
5133421320104
612301251220
72060454645
oct507020174
9188274563
1085729404
1144434852
1224863b10
13149b8177
14b5586cc
1577d6489
hex51c207c

85729404 has 24 divisors (see below), whose sum is σ = 200482128. Its totient is φ = 28512640.

The previous prime is 85729403. The next prime is 85729409. The reversal of 85729404 is 40492758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85729403) by changing a digit.

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, 2217 + ... + 13280.

It is an arithmetic number, because the mean of its divisors is an integer number (8353422).

Almost surely, 285729404 is an apocalyptic number.

It is an amenable number.

85729404 is an abundant number, since it is smaller than the sum of its proper divisors (114752724).

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

85729404 is a wasteful number, since it uses less digits than its factorization.

85729404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15965 (or 15963 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 85729404 is about 9259.0174424720. The cubic root of 85729404 is about 440.9370594200.

The spelling of 85729404 in words is "eighty-five million, seven hundred twenty-nine thousand, four hundred four".

Divisors: 1 2 3 4 6 12 461 922 1383 1844 2766 5532 15497 30994 46491 61988 92982 185964 7144117 14288234 21432351 28576468 42864702 85729404