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12488340 = 2235208139
BaseRepresentation
bin101111101000…
…111010010100
3212111110210010
4233220322110
511144111330
61123400220
7211102104
oct57507224
925443703
1012488340
11705a747
124223070
132783367
141931204
15116a3b0
hexbe8e94

12488340 has 24 divisors (see below), whose sum is σ = 34967520. Its totient is φ = 3330208.

The previous prime is 12488327. The next prime is 12488369. The reversal of 12488340 is 4388421.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12488298 and 12488307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104010 + ... + 104129.

It is an arithmetic number, because the mean of its divisors is an integer number (1456980).

Almost surely, 212488340 is an apocalyptic number.

12488340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12488340 is an abundant number, since it is smaller than the sum of its proper divisors (22479180).

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

12488340 is a wasteful number, since it uses less digits than its factorization.

12488340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208151 (or 208149 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 12488340 is about 3533.8845481990. The cubic root of 12488340 is about 232.0072579973.

The spelling of 12488340 in words is "twelve million, four hundred eighty-eight thousand, three hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 208139 416278 624417 832556 1040695 1248834 2081390 2497668 3122085 4162780 6244170 12488340