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85757424 = 2431786613
BaseRepresentation
bin1010001110010…
…00110111110000
312222100221001220
411013020313300
5133423214144
612302025040
72060632434
oct507106760
9188327056
1085757424
1144453905
1224878180
13149c7b4c
14b5649c4
1577de919
hex51c8df0

85757424 has 20 divisors (see below), whose sum is σ = 221540136. Its totient is φ = 28585792.

The previous prime is 85757411. The next prime is 85757429. The reversal of 85757424 is 42475758.

It is a super-2 number, since 2×857574242 = 14708671542231552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85757429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893259 + ... + 893354.

Almost surely, 285757424 is an apocalyptic number.

It is an amenable number.

85757424 is an abundant number, since it is smaller than the sum of its proper divisors (135782712).

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

85757424 is a wasteful number, since it uses less digits than its factorization.

85757424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786624 (or 1786618 counting only the distinct ones).

The product of its digits is 313600, while the sum is 42.

The square root of 85757424 is about 9260.5304383712. The cubic root of 85757424 is about 440.9850931557.

The spelling of 85757424 in words is "eighty-five million, seven hundred fifty-seven thousand, four hundred twenty-four".

Divisors: 1 2 3 4 6 8 12 16 24 48 1786613 3573226 5359839 7146452 10719678 14292904 21439356 28585808 42878712 85757424