73240 has 16 divisors (see below), whose sum is σ = 164880. Its totient is φ = 29280.

The previous prime is 73237. The next prime is 73243. The reversal of 73240 is 4237.

73240 = 60² + 61² + ... + 75².

It is an interprime number because it is at equal distance from previous prime (73237) and next prime (73243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73243) 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, 876 + ... + 955.

It is an arithmetic number, because the mean of its divisors is an integer number (10305).

2⁷³²⁴⁰ is an apocalyptic number.

It is an amenable number.

73240 is an abundant number, since it is smaller than the sum of its proper divisors (91640).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82440).

73240 is a wasteful number, since it uses less digits than its factorization.

73240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 1838 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 73240 is about 270.6288972006. The cubic root of 73240 is about 41.8391428399.

Adding to 73240 its reverse (4237), we get a palindrome (77477).

It can be divided in two parts, 73 and 240, that added together give a palindrome (313).

The spelling of 73240 in words is "seventy-three thousand, two hundred forty", and thus it is an iban number.