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12538206 = 233232189
BaseRepresentation
bin101111110101…
…000101011110
3212121000012000
4233311011132
511202210311
61124423130
7211400352
oct57650536
925530160
1012538206
11709415a
124247aa6
13279cc75
141945462
15117a056
hexbf515e

12538206 has 16 divisors (see below), whose sum is σ = 27862800. Its totient is φ = 4179384.

The previous prime is 12538199. The next prime is 12538223. The reversal of 12538206 is 60283521.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12538206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116041 + ... + 116148.

It is an arithmetic number, because the mean of its divisors is an integer number (1741425).

Almost surely, 212538206 is an apocalyptic number.

12538206 is an abundant number, since it is smaller than the sum of its proper divisors (15324594).

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

12538206 is a wasteful number, since it uses less digits than its factorization.

12538206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232200 (or 232194 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 12538206 is about 3540.9329279160. The cubic root of 12538206 is about 232.3156499126.

The spelling of 12538206 in words is "twelve million, five hundred thirty-eight thousand, two hundred six".

Divisors: 1 2 3 6 9 18 27 54 232189 464378 696567 1393134 2089701 4179402 6269103 12538206