73280448 has 168 divisors, whose sum is σ = 224668080. Its totient is φ = 22794240.

The previous prime is 73280447. The next prime is 73280453. The reversal of 73280448 is 84408237.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73280447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 684811 + ... + 684917.

It is an arithmetic number, because the mean of its divisors is an integer number (1337310).

Almost surely, 2^73280448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73280448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112334040).

73280448 is an abundant number, since it is smaller than the sum of its proper divisors (151387632).

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

73280448 is a wasteful number, since it uses less digits than its factorization.

73280448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 73280448 is about 8560.3999906546. The cubic root of 73280448 is about 418.4684354178.

The spelling of 73280448 in words is "seventy-three million, two hundred eighty thousand, four hundred forty-eight".