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12020407 = 71990379
BaseRepresentation
bin101101110110…
…101010110111
3211121200220021
4231312222313
511034123112
61105350011
7204112630
oct55665267
924550807
1012020407
116870123
124038307
13264b389
14184c887
1510c6907
hexb76ab7

12020407 has 8 divisors (see below), whose sum is σ = 14460800. Its totient is φ = 9760824.

The previous prime is 12020389. The next prime is 12020417. The reversal of 12020407 is 70402021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12020407 - 219 = 11496119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020417) 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, 45057 + ... + 45322.

It is an arithmetic number, because the mean of its divisors is an integer number (1807600).

Almost surely, 212020407 is an apocalyptic number.

12020407 is a deficient number, since it is larger than the sum of its proper divisors (2440393).

12020407 is an equidigital number, since it uses as much as digits as its factorization.

12020407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90405.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 12020407 is about 3467.0458606716. The cubic root of 12020407 is about 229.0725538110.

Adding to 12020407 its reverse (70402021), we get a palindrome (82422428).

The spelling of 12020407 in words is "twelve million, twenty thousand, four hundred seven".

Divisors: 1 7 19 133 90379 632653 1717201 12020407