73040440 has 48 divisors (see below), whose sum is σ = 180651240. Its totient is φ = 26558400.

The previous prime is 73040437. The next prime is 73040459. The reversal of 73040440 is 4404037.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2706 + ... + 12385.

Almost surely, 2^73040440 is an apocalyptic number.

It is an amenable number.

73040440 is an abundant number, since it is smaller than the sum of its proper divisors (107610800).

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

73040440 is a wasteful number, since it uses less digits than its factorization.

73040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15124 (or 15109 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 73040440 is about 8546.3699896506. The cubic root of 73040440 is about 418.0110800387.

Adding to 73040440 its reverse (4404037), we get a palindrome (77444477).

The spelling of 73040440 in words is "seventy-three million, forty thousand, four hundred forty".