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72343 = 73991
BaseRepresentation
bin10001101010010111
310200020101
4101222113
54303333
61314531
7420625
oct215227
9120211
1072343
114a397
1235a47
1326c0b
141c515
151667d
hex11a97

72343 has 4 divisors (see below), whose sum is σ = 73408. Its totient is φ = 71280.

The previous prime is 72341. The next prime is 72353. The reversal of 72343 is 34327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72343 - 21 = 72341 is a prime.

It is a d-powerful number, because it can be written as 74 + 25 + 37 + 48 + 37 .

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

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 72343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72341) 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, 423 + ... + 568.

It is an arithmetic number, because the mean of its divisors is an integer number (18352).

272343 is an apocalyptic number.

72343 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

72343 is a deficient number, since it is larger than the sum of its proper divisors (1065).

72343 is an equidigital number, since it uses as much as digits as its factorization.

72343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064.

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

The square root of 72343 is about 268.9665406700. The cubic root of 72343 is about 41.6676337553.

The spelling of 72343 in words is "seventy-two thousand, three hundred forty-three", and thus it is an iban number.

Divisors: 1 73 991 72343