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2530440 = 233451171
BaseRepresentation
bin1001101001110010001000
311202120010000
421221302020
51121433230
6130123000
730336243
oct11516210
94676100
102530440
111479180
12a20460
136a7a03
1449c25a
1534eb60
hex269c88

2530440 has 160 divisors (see below), whose sum is σ = 9408960. Its totient is φ = 604800.

The previous prime is 2530427. The next prime is 2530441. The reversal of 2530440 is 440352.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (2530441) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35605 + ... + 35675.

It is an arithmetic number, because the mean of its divisors is an integer number (58806).

22530440 is an apocalyptic number.

2530440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2530440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4704480).

2530440 is an abundant number, since it is smaller than the sum of its proper divisors (6878520).

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

2530440 is a wasteful number, since it uses less digits than its factorization.

2530440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2530440 is about 1590.7356788606. The cubic root of 2530440 is about 136.2695059468.

Adding to 2530440 its reverse (440352), we get a palindrome (2970792).

The spelling of 2530440 in words is "two million, five hundred thirty thousand, four hundred forty".

Divisors: 1 2 3 4 5 6 8 9 10 11 12 15 18 20 22 24 27 30 33 36 40 44 45 54 55 60 66 71 72 81 88 90 99 108 110 120 132 135 142 162 165 180 198 213 216 220 264 270 284 297 324 330 355 360 396 405 426 440 495 540 568 594 639 648 660 710 781 792 810 852 891 990 1065 1080 1188 1278 1320 1420 1485 1562 1620 1704 1782 1917 1980 2130 2343 2376 2556 2840 2970 3124 3195 3240 3564 3834 3905 3960 4260 4455 4686 5112 5751 5940 6248 6390 7029 7128 7668 7810 8520 8910 9372 9585 11502 11715 11880 12780 14058 15336 15620 17820 18744 19170 21087 23004 23430 25560 28116 28755 31240 35145 35640 38340 42174 46008 46860 56232 57510 63261 70290 76680 84348 93720 105435 115020 126522 140580 168696 210870 230040 253044 281160 316305 421740 506088 632610 843480 1265220 2530440