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73445 = 537397
BaseRepresentation
bin10001111011100101
310201202012
4101323211
54322240
61324005
7424061
oct217345
9121665
1073445
11501a9
1236605
1327578
141caa1
1516b65
hex11ee5

73445 has 8 divisors (see below), whose sum is σ = 90744. Its totient is φ = 57024.

The previous prime is 73433. The next prime is 73453. The reversal of 73445 is 54437.

It can be written as a sum of positive squares in 4 ways, for example, as 25921 + 47524 = 161^2 + 218^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 73445 - 28 = 73189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14 + ... + 383.

It is an arithmetic number, because the mean of its divisors is an integer number (11343).

273445 is an apocalyptic number.

It is an amenable number.

73445 is a deficient number, since it is larger than the sum of its proper divisors (17299).

73445 is a wasteful number, since it uses less digits than its factorization.

73445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439.

The product of its digits is 1680, while the sum is 23.

The square root of 73445 is about 271.0073799733. The cubic root of 73445 is about 41.8781426319.

The spelling of 73445 in words is "seventy-three thousand, four hundred forty-five".

Divisors: 1 5 37 185 397 1985 14689 73445