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12490269 = 311378493
BaseRepresentation
bin101111101001…
…011000011101
3212111120102120
4233221120131
511144142034
61123413153
7211110531
oct57513035
925446376
1012490269
117061140
1242241b9
1327841bc
141931bc1
15116ac49
hexbe961d

12490269 has 8 divisors (see below), whose sum is σ = 18167712. Its totient is φ = 7569840.

The previous prime is 12490259. The next prime is 12490273. The reversal of 12490269 is 96209421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12490269 - 25 = 12490237 is a prime.

It is a super-2 number, since 2×124902692 = 312013639384722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 378493 = 12490269 / (1 + 2 + 4 + 9 + 0 + 2 + 6 + 9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12490259) 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, 189214 + ... + 189279.

It is an arithmetic number, because the mean of its divisors is an integer number (2270964).

Almost surely, 212490269 is an apocalyptic number.

It is an amenable number.

12490269 is a deficient number, since it is larger than the sum of its proper divisors (5677443).

12490269 is a wasteful number, since it uses less digits than its factorization.

12490269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378507.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 12490269 is about 3534.1574667804. The cubic root of 12490269 is about 232.0192029785.

The spelling of 12490269 in words is "twelve million, four hundred ninety thousand, two hundred sixty-nine".

Divisors: 1 3 11 33 378493 1135479 4163423 12490269