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19342469 = 24377937
BaseRepresentation
bin100100111001…
…0010010000101
31100101200212202
41021302102011
514422424334
61530324245
7323260016
oct111622205
940350782
1019342469
11aa11313
126589685
134013063
1427d700d
151a7117e
hex1272485

19342469 has 4 divisors (see below), whose sum is σ = 19352844. Its totient is φ = 19332096.

The previous prime is 19342451. The next prime is 19342483. The reversal of 19342469 is 96424391.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18809569 + 532900 = 4337^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 19342469 - 212 = 19338373 is a prime.

It is a super-2 number, since 2×193424692 = 748262214031922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19342489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532 + ... + 6405.

It is an arithmetic number, because the mean of its divisors is an integer number (4838211).

Almost surely, 219342469 is an apocalyptic number.

It is an amenable number.

19342469 is a deficient number, since it is larger than the sum of its proper divisors (10375).

19342469 is an equidigital number, since it uses as much as digits as its factorization.

19342469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10374.

The product of its digits is 46656, while the sum is 38.

The square root of 19342469 is about 4398.0073897164. The cubic root of 19342469 is about 268.4338641443.

The spelling of 19342469 in words is "nineteen million, three hundred forty-two thousand, four hundred sixty-nine".

Divisors: 1 2437 7937 19342469