67213828 has 24 divisors (see below), whose sum is σ = 132459264. Its totient is φ = 29565600.

The previous prime is 67213799. The next prime is 67213829. The reversal of 67213828 is 82831276.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (67213829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23275 + ... + 26002.

It is an arithmetic number, because the mean of its divisors is an integer number (5519136).

Almost surely, 2^67213828 is an apocalyptic number.

It is an amenable number.

67213828 is a deficient number, since it is larger than the sum of its proper divisors (65245436).

67213828 is a wasteful number, since it uses less digits than its factorization.

67213828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49323 (or 49321 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 67213828 is about 8198.4039910217. The cubic root of 67213828 is about 406.5864271801.

The spelling of 67213828 in words is "sixty-seven million, two hundred thirteen thousand, eight hundred twenty-eight".