67281828 has 24 divisors (see below), whose sum is σ = 157187520. Its totient is φ = 22399200.

The previous prime is 67281821. The next prime is 67281847. The reversal of 67281828 is 82818276.

It is a self number, because there is not a number n which added to its sum of digits gives 67281828.

It is not an unprimeable number, because it can be changed into a prime (67281821) 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, 7978 + ... + 14078.

It is an arithmetic number, because the mean of its divisors is an integer number (6549480).

Almost surely, 2^67281828 is an apocalyptic number.

It is an amenable number.

67281828 is an abundant number, since it is smaller than the sum of its proper divisors (89905692).

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

67281828 is a wasteful number, since it uses less digits than its factorization.

67281828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7027 (or 7025 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 67281828 is about 8202.5500912826. The cubic root of 67281828 is about 406.7234949996.

The spelling of 67281828 in words is "sixty-seven million, two hundred eighty-one thousand, eight hundred twenty-eight".