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85831448 = 2313997669
BaseRepresentation
bin1010001110110…
…10111100011000
312222111200121112
411013122330120
5133433101243
612303355452
72061361313
oct507327430
9188450545
1085831448
11444a448a
12248b2b88
1314a22751
14b58397a
157806818
hex51daf18

85831448 has 16 divisors (see below), whose sum is σ = 161070000. Its totient is φ = 42879456.

The previous prime is 85831439. The next prime is 85831451. The reversal of 85831448 is 84413858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7358 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (10066875).

Almost surely, 285831448 is an apocalyptic number.

It is an amenable number.

85831448 is a deficient number, since it is larger than the sum of its proper divisors (75238552).

85831448 is a wasteful number, since it uses less digits than its factorization.

85831448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9074 (or 9070 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 85831448 is about 9264.5263235634. The cubic root of 85831448 is about 441.1119396766. Note that the first 3 decimals are identical.

The spelling of 85831448 in words is "eighty-five million, eight hundred thirty-one thousand, four hundred forty-eight".

Divisors: 1 2 4 8 1399 2798 5596 7669 11192 15338 30676 61352 10728931 21457862 42915724 85831448