73280438 has 64 divisors (see below), whose sum is σ = 151538688. Its totient is φ = 25681920.

The previous prime is 73280423. The next prime is 73280447. The reversal of 73280438 is 83408237.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 73280398 and 73280407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59606 + ... + 60822.

It is an arithmetic number, because the mean of its divisors is an integer number (2367792).

Almost surely, 2^73280438 is an apocalyptic number.

73280438 is an abundant number, since it is smaller than the sum of its proper divisors (78258250).

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

73280438 is a wasteful number, since it uses less digits than its factorization.

73280438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 73280438 is about 8560.3994065698. The cubic root of 73280438 is about 418.4684163828.

The spelling of 73280438 in words is "seventy-three million, two hundred eighty thousand, four hundred thirty-eight".