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12201290 = 253139359
BaseRepresentation
bin101110100010…
…110101001010
3211221220000122
4232202311022
511110420130
61113303242
7205465163
oct56426512
924856018
1012201290
116984012
124104b22
1326b27ca
14189876a
1511102e5
hexba2d4a

12201290 has 16 divisors (see below), whose sum is σ = 22671360. Its totient is φ = 4722960.

The previous prime is 12201283. The next prime is 12201311. The reversal of 12201290 is 9210221.

12201290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 19370 + ... + 19989.

It is an arithmetic number, because the mean of its divisors is an integer number (1416960).

Almost surely, 212201290 is an apocalyptic number.

12201290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12201290 is a deficient number, since it is larger than the sum of its proper divisors (10470070).

12201290 is a wasteful number, since it uses less digits than its factorization.

12201290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39397.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 12201290 is about 3493.0344973962. The cubic root of 12201290 is about 230.2158653901.

The spelling of 12201290 in words is "twelve million, two hundred one thousand, two hundred ninety".

Divisors: 1 2 5 10 31 62 155 310 39359 78718 196795 393590 1220129 2440258 6100645 12201290