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12406069 = 131950227
BaseRepresentation
bin101111010100…
…110100110101
3212100021221001
4233110310311
511133443234
61121523301
7210310204
oct57246465
925307831
1012406069
117003955
1241a3531
132754a90
14190d23b
151150d14
hexbd4d35

12406069 has 8 divisors (see below), whose sum is σ = 14063840. Its totient is φ = 10848816.

The previous prime is 12406057. The next prime is 12406087. The reversal of 12406069 is 96060421.

12406069 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12406069 - 29 = 12405557 is a prime.

It is a super-2 number, since 2×124060692 = 307821096065522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12406049) 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, 24867 + ... + 25360.

It is an arithmetic number, because the mean of its divisors is an integer number (1757980).

Almost surely, 212406069 is an apocalyptic number.

12406069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12406069 is a deficient number, since it is larger than the sum of its proper divisors (1657771).

12406069 is a wasteful number, since it uses less digits than its factorization.

12406069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50259.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 12406069 is about 3522.2250070091. The cubic root of 12406069 is about 231.4966606941.

The spelling of 12406069 in words is "twelve million, four hundred six thousand, sixty-nine".

Divisors: 1 13 19 247 50227 652951 954313 12406069