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12123485 = 511534159
BaseRepresentation
bin101110001111…
…110101011101
3211210221021222
4232033311131
511100422420
61111503125
7205022303
oct56176535
924727258
1012123485
116930610
124087aa5
13268627a
141878273
1510e7225
hexb8fd5d

12123485 has 16 divisors (see below), whose sum is σ = 16174080. Its totient is φ = 8648640.

The previous prime is 12123481. The next prime is 12123493. The reversal of 12123485 is 58432121.

It is not a de Polignac number, because 12123485 - 22 = 12123481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 836 + ... + 4994.

It is an arithmetic number, because the mean of its divisors is an integer number (1010880).

Almost surely, 212123485 is an apocalyptic number.

It is an amenable number.

12123485 is a deficient number, since it is larger than the sum of its proper divisors (4050595).

12123485 is a wasteful number, since it uses less digits than its factorization.

12123485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228.

The product of its digits is 1920, while the sum is 26.

The square root of 12123485 is about 3481.8795211782. The cubic root of 12123485 is about 229.7254758656.

The spelling of 12123485 in words is "twelve million, one hundred twenty-three thousand, four hundred eighty-five".

Divisors: 1 5 11 53 55 265 583 2915 4159 20795 45749 220427 228745 1102135 2424697 12123485