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12530620 = 2256110271
BaseRepresentation
bin101111110011…
…001110111100
3212120121210001
4233303032330
511201434440
61124324044
7211336264
oct57631674
925517701
1012530620
117089493
124243624
13279968b
1419427a4
151177b9a
hexbf33bc

12530620 has 24 divisors (see below), whose sum is σ = 26748288. Its totient is φ = 4929600.

The previous prime is 12530599. The next prime is 12530629. The reversal of 12530620 is 2603521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3916 + ... + 6355.

It is an arithmetic number, because the mean of its divisors is an integer number (1114512).

Almost surely, 212530620 is an apocalyptic number.

12530620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12530620 is an abundant number, since it is smaller than the sum of its proper divisors (14217668).

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

12530620 is a wasteful number, since it uses less digits than its factorization.

12530620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341 (or 10339 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12530620 is about 3539.8615792146. The cubic root of 12530620 is about 232.2687877574.

The spelling of 12530620 in words is "twelve million, five hundred thirty thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 61 122 244 305 610 1220 10271 20542 41084 51355 102710 205420 626531 1253062 2506124 3132655 6265310 12530620