67394172 has 12 divisors (see below), whose sum is σ = 157253096. Its totient is φ = 22464720.

The previous prime is 67394167. The next prime is 67394179. The reversal of 67394172 is 27149376.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 67394172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67394179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2808079 + ... + 2808102.

Almost surely, 2^67394172 is an apocalyptic number.

It is an amenable number.

67394172 is an abundant number, since it is smaller than the sum of its proper divisors (89858924).

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

67394172 is a wasteful number, since it uses less digits than its factorization.

67394172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616188 (or 5616186 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 67394172 is about 8209.3953492325. The cubic root of 67394172 is about 406.9497449756.

The spelling of 67394172 in words is "sixty-seven million, three hundred ninety-four thousand, one hundred seventy-two".