67728134 has 4 divisors (see below), whose sum is σ = 101592204. Its totient is φ = 33864066.

The previous prime is 67728127. The next prime is 67728161. The reversal of 67728134 is 43182776.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16932032 + ... + 16932035.

It is an arithmetic number, because the mean of its divisors is an integer number (25398051).

Almost surely, 2^67728134 is an apocalyptic number.

67728134 is a deficient number, since it is larger than the sum of its proper divisors (33864070).

67728134 is a wasteful number, since it uses less digits than its factorization.

67728134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33864069.

The product of its digits is 56448, while the sum is 38.

The square root of 67728134 is about 8229.7104444810. The cubic root of 67728134 is about 407.6208310930.

The spelling of 67728134 in words is "sixty-seven million, seven hundred twenty-eight thousand, one hundred thirty-four".