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730620 = 223451141
BaseRepresentation
bin10110010010111111100
31101010020000
42302113330
5141334440
623354300
76132042
oct2622774
91333200
10730620
11459a20
122b2990
131c7727
14150392
15e6730
hexb25fc

730620 has 120 divisors (see below), whose sum is σ = 2561328. Its totient is φ = 172800.

The previous prime is 730619. The next prime is 730633. The reversal of 730620 is 26037.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 730593 and 730602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17800 + ... + 17840.

2730620 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 730620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280664).

730620 is an abundant number, since it is smaller than the sum of its proper divisors (1830708).

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

730620 is a wasteful number, since it uses less digits than its factorization.

730620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 730620 is about 854.7631250820. The cubic root of 730620 is about 90.0666173448.

Adding to 730620 its reverse (26037), we get a palindrome (756657).

The spelling of 730620 in words is "seven hundred thirty thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 11 12 15 18 20 22 27 30 33 36 41 44 45 54 55 60 66 81 82 90 99 108 110 123 132 135 162 164 165 180 198 205 220 246 270 297 324 330 369 396 405 410 451 492 495 540 594 615 660 738 810 820 891 902 990 1107 1188 1230 1353 1476 1485 1620 1782 1804 1845 1980 2214 2255 2460 2706 2970 3321 3564 3690 4059 4428 4455 4510 5412 5535 5940 6642 6765 7380 8118 8910 9020 11070 12177 13284 13530 16236 16605 17820 20295 22140 24354 27060 33210 36531 40590 48708 60885 66420 73062 81180 121770 146124 182655 243540 365310 730620