73241540 has 12 divisors (see below), whose sum is σ = 153807276. Its totient is φ = 29296608.

The previous prime is 73241459. The next prime is 73241563. The reversal of 73241540 is 4514237.

It can be written as a sum of positive squares in 2 ways, for example, as 53027524 + 20214016 = 7282^2 + 4496^2 .

It is an unprimeable number.

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, 1831019 + ... + 1831058.

It is an arithmetic number, because the mean of its divisors is an integer number (12817273).

Almost surely, 2^73241540 is an apocalyptic number.

It is an amenable number.

73241540 is an abundant number, since it is smaller than the sum of its proper divisors (80565736).

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

73241540 is a wasteful number, since it uses less digits than its factorization.

73241540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662086 (or 3662084 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 73241540 is about 8558.1271315633. The cubic root of 73241540 is about 418.3943608510.

Adding to 73241540 its reverse (4514237), we get a palindrome (77755777).

The spelling of 73241540 in words is "seventy-three million, two hundred forty-one thousand, five hundred forty".