73130740 has 12 divisors (see below), whose sum is σ = 153574596. Its totient is φ = 29252288.

The previous prime is 73130723. The next prime is 73130789. The reversal of 73130740 is 4703137.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48944016 + 24186724 = 6996^2 + 4918^2 .

It is a super-3 number, since 3×73130740³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1828249 + ... + 1828288.

It is an arithmetic number, because the mean of its divisors is an integer number (12797883).

Almost surely, 2^73130740 is an apocalyptic number.

It is an amenable number.

73130740 is an abundant number, since it is smaller than the sum of its proper divisors (80443856).

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

73130740 is a wasteful number, since it uses less digits than its factorization.

73130740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3656546 (or 3656544 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 25.

The square root of 73130740 is about 8551.6513025263. The cubic root of 73130740 is about 418.1832716625.

Adding to 73130740 its reverse (4703137), we get a palindrome (77833877).

The spelling of 73130740 in words is "seventy-three million, one hundred thirty thousand, seven hundred forty".