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90469120 = 285723439
BaseRepresentation
bin1010110010001…
…11001100000000
320022020022022011
411121013030000
5141130002440
612551022304
72145655240
oct531071400
9208208264
1090469120
1147081875
122636a994
1315987631
14c02db20
157e209ea
hex5647300

90469120 has 144 divisors (see below), whose sum is σ = 259015680. Its totient is φ = 29601792.

The previous prime is 90469103. The next prime is 90469201. The reversal of 90469120 is 2196409.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205861 + ... + 206299.

It is an arithmetic number, because the mean of its divisors is an integer number (1798720).

Almost surely, 290469120 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 90469120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129507840).

90469120 is an abundant number, since it is smaller than the sum of its proper divisors (168546560).

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

90469120 is a wasteful number, since it uses less digits than its factorization.

90469120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 90469120 is about 9511.5256399802. The cubic root of 90469120 is about 448.9177614704.

The spelling of 90469120 in words is "ninety million, four hundred sixty-nine thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 56 64 70 80 92 112 115 128 140 160 161 184 224 230 256 280 320 322 368 439 448 460 560 640 644 736 805 878 896 920 1120 1280 1288 1472 1610 1756 1792 1840 2195 2240 2576 2944 3073 3220 3512 3680 4390 4480 5152 5888 6146 6440 7024 7360 8780 8960 10097 10304 12292 12880 14048 14720 15365 17560 20194 20608 24584 25760 28096 29440 30730 35120 40388 41216 49168 50485 51520 56192 61460 70240 70679 80776 98336 100970 103040 112384 122920 140480 141358 161552 196672 201940 206080 245840 280960 282716 323104 353395 393344 403880 491680 561920 565432 646208 706790 786688 807760 983360 1130864 1292416 1413580 1615520 1966720 2261728 2584832 2827160 3231040 3933440 4523456 5654320 6462080 9046912 11308640 12924160 18093824 22617280 45234560 90469120