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12430540 = 225621527
BaseRepresentation
bin101111011010…
…110011001100
3212101112111101
4233122303030
511140234130
61122232444
7210441433
oct57326314
925345441
1012430540
117020281
1241b5724
132762c65
14191811a
1511581ca
hexbdaccc

12430540 has 12 divisors (see below), whose sum is σ = 26104176. Its totient is φ = 4972208.

The previous prime is 12430507. The next prime is 12430547. The reversal of 12430540 is 4503421.

It is not an unprimeable number, because it can be changed into a prime (12430547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310744 + ... + 310783.

It is an arithmetic number, because the mean of its divisors is an integer number (2175348).

Almost surely, 212430540 is an apocalyptic number.

12430540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12430540 is an abundant number, since it is smaller than the sum of its proper divisors (13673636).

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

12430540 is a wasteful number, since it uses less digits than its factorization.

12430540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621536 (or 621534 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12430540 is about 3525.6970941929. The cubic root of 12430540 is about 231.6487699601.

Adding to 12430540 its reverse (4503421), we get a palindrome (16933961).

The spelling of 12430540 in words is "twelve million, four hundred thirty thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 621527 1243054 2486108 3107635 6215270 12430540