73245440 has 36 divisors (see below), whose sum is σ = 175448784. Its totient is φ = 29297664.

The previous prime is 73245439. The next prime is 73245461. The reversal of 73245440 is 4454237.

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, 27332 + ... + 29891.

Almost surely, 2^73245440 is an apocalyptic number.

It is an amenable number.

73245440 is an abundant number, since it is smaller than the sum of its proper divisors (102203344).

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

73245440 is an equidigital number, since it uses as much as digits as its factorization.

73245440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57244 (or 57230 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 73245440 is about 8558.3549821213. The cubic root of 73245440 is about 418.4017870058.

Adding to 73245440 its reverse (4454237), we get a palindrome (77699677).

The spelling of 73245440 in words is "seventy-three million, two hundred forty-five thousand, four hundred forty".