67478928 has 80 divisors (see below), whose sum is σ = 191344896. Its totient is φ = 20321920.

The previous prime is 67478927. The next prime is 67478953. The reversal of 67478928 is 82987476.

It is not an unprimeable number, because it can be changed into a prime (67478921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119575 + ... + 120137.

Almost surely, 2^67478928 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 67478928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95672448).

67478928 is an abundant number, since it is smaller than the sum of its proper divisors (123865968).

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

67478928 is a wasteful number, since it uses less digits than its factorization.

67478928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 51.

The square root of 67478928 is about 8214.5558613963. Note that the first 3 decimals coincide. The cubic root of 67478928 is about 407.1202690366.

The spelling of 67478928 in words is "sixty-seven million, four hundred seventy-eight thousand, nine hundred twenty-eight".