67040448 has 56 divisors (see below), whose sum is σ = 182191152. Its totient is φ = 21740544.

The previous prime is 67040447. The next prime is 67040473. The reversal of 67040448 is 84404076.

It is not an unprimeable number, because it can be changed into a prime (67040443) 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, 2386 + ... + 11822.

Almost surely, 2^67040448 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 67040448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91095576).

67040448 is an abundant number, since it is smaller than the sum of its proper divisors (115150704).

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

67040448 is a wasteful number, since it uses less digits than its factorization.

67040448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9489 (or 9479 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 67040448 is about 8187.8231539280. The cubic root of 67040448 is about 406.2365256912.

The spelling of 67040448 in words is "sixty-seven million, forty thousand, four hundred forty-eight".