67228538 has 12 divisors (see below), whose sum is σ = 109197198. Its totient is φ = 31028400.

The previous prime is 67228501. The next prime is 67228541. The reversal of 67228538 is 83582276.

It can be written as a sum of positive squares in 3 ways, for example, as 20675209 + 46553329 = 4547^2 + 6823^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67228495 and 67228504.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99113 + ... + 99788.

Almost surely, 2^67228538 is an apocalyptic number.

67228538 is a deficient number, since it is larger than the sum of its proper divisors (41968660).

67228538 is a wasteful number, since it uses less digits than its factorization.

67228538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198929 (or 198916 counting only the distinct ones).

The product of its digits is 161280, while the sum is 41.

The square root of 67228538 is about 8199.3010677740. The cubic root of 67228538 is about 406.6160860081.

The spelling of 67228538 in words is "sixty-seven million, two hundred twenty-eight thousand, five hundred thirty-eight".