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85337568 = 25321991489
BaseRepresentation
bin1010001011000…
…10010111100000
312221120121010200
411011202113200
5133321300233
612245025200
72054233401
oct505422740
9187517120
1085337568
1144197418
12246b5200
13148aba04
14b4959a8
15775a313
hex51625e0

85337568 has 72 divisors (see below), whose sum is σ = 244062000. Its totient is φ = 28283904.

The previous prime is 85337557. The next prime is 85337573. The reversal of 85337568 is 86573358.

85337568 is a `hidden beast` number, since 8 + 53 + 37 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 56568 + ... + 58056.

It is an arithmetic number, because the mean of its divisors is an integer number (3389750).

Almost surely, 285337568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85337568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122031000).

85337568 is an abundant number, since it is smaller than the sum of its proper divisors (158724432).

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

85337568 is a wasteful number, since it uses less digits than its factorization.

85337568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1704 (or 1693 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 85337568 is about 9237.8335122473. The cubic root of 85337568 is about 440.2642489828.

It can be divided in two parts, 85337 and 568, that added together give a triangular number (85905 = T414).

The spelling of 85337568 in words is "eighty-five million, three hundred thirty-seven thousand, five hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 199 288 398 597 796 1194 1489 1592 1791 2388 2978 3184 3582 4467 4776 5956 6368 7164 8934 9552 11912 13401 14328 17868 19104 23824 26802 28656 35736 47648 53604 57312 71472 107208 142944 214416 296311 428832 592622 888933 1185244 1777866 2370488 2666799 3555732 4740976 5333598 7111464 9481952 10667196 14222928 21334392 28445856 42668784 85337568