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85152288 = 2531331271
BaseRepresentation
bin1010001001101…
…01001000100000
312221020011222110
411010311020200
5133244333123
612241035320
72052532254
oct504651040
9187204873
1085152288
11440801a1
1224625b40
1314845590
14b448264
157720493
hex5135220

85152288 has 144 divisors (see below), whose sum is σ = 252237888. Its totient is φ = 24998400.

The previous prime is 85152271. The next prime is 85152307. The reversal of 85152288 is 88225158.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1199293 + ... + 1199363.

It is an arithmetic number, because the mean of its divisors is an integer number (1751652).

Almost surely, 285152288 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 85152288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126118944).

85152288 is an abundant number, since it is smaller than the sum of its proper divisors (167085600).

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

85152288 is a wasteful number, since it uses less digits than its factorization.

85152288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 120 counting only the distinct ones).

The product of its digits is 51200, while the sum is 39.

The square root of 85152288 is about 9227.7997377490. The cubic root of 85152288 is about 439.9453926721.

The spelling of 85152288 in words is "eighty-five million, one hundred fifty-two thousand, two hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 31 32 39 48 52 62 71 78 93 96 104 124 142 156 186 208 213 248 284 312 372 403 416 426 496 568 624 744 806 852 923 961 992 1136 1209 1248 1488 1612 1704 1846 1922 2201 2272 2418 2769 2883 2976 3224 3408 3692 3844 4402 4836 5538 5766 6448 6603 6816 7384 7688 8804 9672 11076 11532 12493 12896 13206 14768 15376 17608 19344 22152 23064 24986 26412 28613 29536 30752 35216 37479 38688 44304 46128 49972 52824 57226 68231 70432 74958 85839 88608 92256 99944 105648 114452 136462 149916 171678 199888 204693 211296 228904 272924 299832 343356 399776 409386 457808 545848 599664 686712 818772 887003 915616 1091696 1199328 1373424 1637544 1774006 2183392 2661009 2746848 3275088 3548012 5322018 6550176 7096024 10644036 14192048 21288072 28384096 42576144 85152288