73090 has 8 divisors (see below), whose sum is σ = 131580. Its totient is φ = 29232.

The previous prime is 73079. The next prime is 73091. The reversal of 73090 is 9037.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72361 + 729 = 269^2 + 27^2 .

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

It is not an unprimeable number, because it can be changed into a prime (73091) by changing a digit.

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, 3645 + ... + 3664.

2⁷³⁰⁹⁰ is an apocalyptic number.

73090 is a deficient number, since it is larger than the sum of its proper divisors (58490).

73090 is a wasteful number, since it uses less digits than its factorization.

73090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7316.

The product of its (nonzero) digits is 189, while the sum is 19.

The square root of 73090 is about 270.3516228914. The cubic root of 73090 is about 41.8105602768.

It can be divided in two parts, 730 and 90, that added together give a triangular number (820 = T₄₀).

The spelling of 73090 in words is "seventy-three thousand, ninety".