73063840 has 24 divisors (see below), whose sum is σ = 172613700. Its totient is φ = 29225472.

The previous prime is 73063831. The next prime is 73063843. The reversal of 73063840 is 4836037.

It can be written as a sum of positive squares in 2 ways, for example, as 67699984 + 5363856 = 8228^2 + 2316^2 .

It is not an unprimeable number, because it can be changed into a prime (73063843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228165 + ... + 228484.

Almost surely, 2^73063840 is an apocalyptic number.

It is an amenable number.

73063840 is an abundant number, since it is smaller than the sum of its proper divisors (99549860).

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

73063840 is a wasteful number, since it uses less digits than its factorization.

73063840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456664 (or 456656 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 73063840 is about 8547.7388823010. The cubic root of 73063840 is about 418.0557147410.

Adding to 73063840 its reverse (4836037), we get a palindrome (77899877).

The spelling of 73063840 in words is "seventy-three million, sixty-three thousand, eight hundred forty".