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12530490 = 235759669
BaseRepresentation
bin101111110011…
…001100111010
3212120121121020
4233303030322
511201433430
61124323310
7211336020
oct57631472
925517536
1012530490
117089385
124243536
1327995bb
141942710
151177b10
hexbf333a

12530490 has 32 divisors (see below), whose sum is σ = 34369920. Its totient is φ = 2864064.

The previous prime is 12530489. The next prime is 12530491. The reversal of 12530490 is 9403521.

It is an interprime number because it is at equal distance from previous prime (12530489) and next prime (12530491).

It is a self number, because there is not a number n which added to its sum of digits gives 12530490.

It is not an unprimeable number, because it can be changed into a prime (12530491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29625 + ... + 30044.

It is an arithmetic number, because the mean of its divisors is an integer number (1074060).

Almost surely, 212530490 is an apocalyptic number.

12530490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12530490 is an abundant number, since it is smaller than the sum of its proper divisors (21839430).

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

12530490 is a wasteful number, since it uses less digits than its factorization.

12530490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59686.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 12530490 is about 3539.8432168671. The cubic root of 12530490 is about 232.2679845238.

The spelling of 12530490 in words is "twelve million, five hundred thirty thousand, four hundred ninety".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 59669 119338 179007 298345 358014 417683 596690 835366 895035 1253049 1790070 2088415 2506098 4176830 6265245 12530490