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344542 = 21115661
BaseRepresentation
bin1010100000111011110
3122111121211
41110013132
542011132
611215034
72633332
oct1240736
9574554
10344542
11215950
1214747a
13c0a93
148d7c2
156c147
hex541de

344542 has 8 divisors (see below), whose sum is σ = 563832. Its totient is φ = 156600.

The previous prime is 344497. The next prime is 344543. The reversal of 344542 is 245443.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 15661 = 344542 / (3 + 4 + 4 + 5 + 4 + 2).

It is a d-powerful number, because it can be written as 34 + 43 + 57 + 46 + 49 + 25 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344543) by changing a digit.

344542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7809 + ... + 7852.

It is an arithmetic number, because the mean of its divisors is an integer number (70479).

2344542 is an apocalyptic number.

344542 is a deficient number, since it is larger than the sum of its proper divisors (219290).

344542 is a wasteful number, since it uses less digits than its factorization.

344542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15674.

The product of its digits is 1920, while the sum is 22.

The square root of 344542 is about 586.9770012530. The cubic root of 344542 is about 70.1047411566.

Adding to 344542 its reverse (245443), we get a palindrome (589985).

Subtracting from 344542 its reverse (245443), we obtain a palindrome (99099).

The spelling of 344542 in words is "three hundred forty-four thousand, five hundred forty-two".

Divisors: 1 2 11 22 15661 31322 172271 344542