67148728 has 16 divisors (see below), whose sum is σ = 129965760. Its totient is φ = 32491200.

The previous prime is 67148699. The next prime is 67148737. The reversal of 67148728 is 82784176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135133 + ... + 135628.

It is an arithmetic number, because the mean of its divisors is an integer number (8122860).

Almost surely, 2^67148728 is an apocalyptic number.

It is an amenable number.

67148728 is a deficient number, since it is larger than the sum of its proper divisors (62817032).

67148728 is a wasteful number, since it uses less digits than its factorization.

67148728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270798 (or 270794 counting only the distinct ones).

The product of its digits is 150528, while the sum is 43.

The square root of 67148728 is about 8194.4327442478. The cubic root of 67148728 is about 406.4551182553.

It can be divided in two parts, 67148 and 728, that added together give a palindrome (67876).

The spelling of 67148728 in words is "sixty-seven million, one hundred forty-eight thousand, seven hundred twenty-eight".