67128232 has 16 divisors (see below), whose sum is σ = 126409140. Its totient is φ = 33419136.

The previous prime is 67128227. The next prime is 67128239. The reversal of 67128232 is 23282176.

It can be written as a sum of positive squares in 2 ways, for example, as 64738116 + 2390116 = 8046^2 + 1546^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67128194 and 67128203.

It is not an unprimeable number, because it can be changed into a prime (67128239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16143 + ... + 19870.

Almost surely, 2^67128232 is an apocalyptic number.

It is an amenable number.

67128232 is a deficient number, since it is larger than the sum of its proper divisors (59280908).

67128232 is a wasteful number, since it uses less digits than its factorization.

67128232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36252 (or 36248 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 67128232 is about 8193.1820436263. The cubic root of 67128232 is about 406.4137595575.

The spelling of 67128232 in words is "sixty-seven million, one hundred twenty-eight thousand, two hundred thirty-two".