67891628 has 24 divisors (see below), whose sum is σ = 136360224. Its totient is φ = 28972800.

The previous prime is 67891627. The next prime is 67891661. The reversal of 67891628 is 82619876.

It is not an unprimeable number, because it can be changed into a prime (67891627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1718 + ... + 11778.

It is an arithmetic number, because the mean of its divisors is an integer number (5681676).

Almost surely, 2^67891628 is an apocalyptic number.

It is an amenable number.

67891628 is an abundant number, since it is smaller than the sum of its proper divisors (68468596).

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

67891628 is a wasteful number, since it uses less digits than its factorization.

67891628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10313 (or 10311 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 67891628 is about 8239.6376133905. The cubic root of 67891628 is about 407.9485629760.

The spelling of 67891628 in words is "sixty-seven million, eight hundred ninety-one thousand, six hundred twenty-eight".