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12392020 = 2254713183
BaseRepresentation
bin101111010001…
…011001010100
3212022120122201
4233101121110
511133021040
61121334244
7210221224
oct57213124
925276581
1012392020
116aa4343
124197384
13274b574
141908084
15114ba9a
hexbd1654

12392020 has 24 divisors (see below), whose sum is σ = 26578944. Its totient is φ = 4850976.

The previous prime is 12392011. The next prime is 12392021. The reversal of 12392020 is 2029321.

It is a happy number.

12392020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12392021) 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, 5652 + ... + 7531.

It is an arithmetic number, because the mean of its divisors is an integer number (1107456).

Almost surely, 212392020 is an apocalyptic number.

12392020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12392020 is an abundant number, since it is smaller than the sum of its proper divisors (14186924).

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

12392020 is a wasteful number, since it uses less digits than its factorization.

12392020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13239 (or 13237 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 12392020 is about 3520.2301061152. The cubic root of 12392020 is about 231.4092431293.

The spelling of 12392020 in words is "twelve million, three hundred ninety-two thousand, twenty".

Divisors: 1 2 4 5 10 20 47 94 188 235 470 940 13183 26366 52732 65915 131830 263660 619601 1239202 2478404 3098005 6196010 12392020