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343072 = 2571151
BaseRepresentation
bin1010011110000100000
3122102121101
41103300200
541434242
611204144
72626132
oct1236040
9572541
10343072
11214834
12146654
13c0202
148d052
156b9b7
hex53c20

343072 has 24 divisors (see below), whose sum is σ = 689472. Its totient is φ = 168000.

The previous prime is 343061. The next prime is 343073. The reversal of 343072 is 270343.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (343073) by changing a digit.

343072 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2197 + ... + 2347.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

343072 is a Friedman number, since it can be written as 70^3+24*3, using all its digits and the basic arithmetic operations.

2343072 is an apocalyptic number.

343072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

343072 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343072 is a wasteful number, since it uses less digits than its factorization.

343072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 343072 is about 585.7234842483. The cubic root of 343072 is about 70.0048976165.

The spelling of 343072 in words is "three hundred forty-three thousand, seventy-two", and thus it is an iban number.

Divisors: 1 2 4 8 16 32 71 142 151 284 302 568 604 1136 1208 2272 2416 4832 10721 21442 42884 85768 171536 343072