73450000 has 120 divisors (see below), whose sum is σ = 193253256. Its totient is φ = 26880000.

The previous prime is 73449989. The next prime is 73450001. The reversal of 73450000 is 5437.

It can be written as a sum of positive squares in 12 ways, for example, as 57577744 + 15872256 = 7588^2 + 3984^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 73450000.

It is not an unprimeable number, because it can be changed into a prime (73450001) 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 23 ways as a sum of consecutive naturals, for example, 649944 + ... + 650056.

Almost surely, 2^73450000 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 73450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96626628).

73450000 is an abundant number, since it is smaller than the sum of its proper divisors (119803256).

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

73450000 is a wasteful number, since it uses less digits than its factorization.

73450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 73450000 is about 8570.2975444263. The cubic root of 73450000 is about 418.7909293921.

Adding to 73450000 its reverse (5437), we get a palindrome (73455437).

The spelling of 73450000 in words is "seventy-three million, four hundred fifty thousand".