73240080 has 160 divisors (see below), whose sum is σ = 249091200. Its totient is φ = 17719296.

The previous prime is 73240067. The next prime is 73240081. The reversal of 73240080 is 8004237.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 73240080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73240081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118011 + ... + 118629.

It is an arithmetic number, because the mean of its divisors is an integer number (1556820).

Almost surely, 2^73240080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73240080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124545600).

73240080 is an abundant number, since it is smaller than the sum of its proper divisors (175851120).

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

73240080 is a wasteful number, since it uses less digits than its factorization.

73240080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 675 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 73240080 is about 8558.0418321015. The cubic root of 73240080 is about 418.3915807355.

The spelling of 73240080 in words is "seventy-three million, two hundred forty thousand, eighty".