73430340 has 48 divisors (see below), whose sum is σ = 207930240. Its totient is φ = 19360000.

The previous prime is 73430339. The next prime is 73430417. The reversal of 73430340 is 4303437.

It is a self number, because there is not a number n which added to its sum of digits gives 73430340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1536 + ... + 12215.

It is an arithmetic number, because the mean of its divisors is an integer number (4331880).

Almost surely, 2^73430340 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 73430340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103965120).

73430340 is an abundant number, since it is smaller than the sum of its proper divisors (134499900).

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

73430340 is a wasteful number, since it uses less digits than its factorization.

73430340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13852 (or 13850 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 24.

The square root of 73430340 is about 8569.1504829825. The cubic root of 73430340 is about 418.7535608222.

Adding to 73430340 its reverse (4303437), we get a palindrome (77733777).

The spelling of 73430340 in words is "seventy-three million, four hundred thirty thousand, three hundred forty".