73434040 has 32 divisors (see below), whose sum is σ = 170559360. Its totient is φ = 28425600.

The previous prime is 73434029. The next prime is 73434043. The reversal of 73434040 is 4043437.

It is a junction number, because it is equal to n+sod(n) for n = 73433996 and 73434014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73434043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28371 + ... + 30850.

It is an arithmetic number, because the mean of its divisors is an integer number (5329980).

Almost surely, 2^73434040 is an apocalyptic number.

It is an amenable number.

73434040 is an abundant number, since it is smaller than the sum of its proper divisors (97125320).

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

73434040 is a wasteful number, since it uses less digits than its factorization.

73434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59263 (or 59259 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 73434040 is about 8569.3663709752. The cubic root of 73434040 is about 418.7605940737.

Adding to 73434040 its reverse (4043437), we get a palindrome (77477477).

The spelling of 73434040 in words is "seventy-three million, four hundred thirty-four thousand, forty".