67996928 has 18 divisors (see below), whose sum is σ = 135728754. Its totient is φ = 33998336.

The previous prime is 67996927. The next prime is 67996949. The reversal of 67996928 is 82969976.

It can be written as a sum of positive squares in only one way, i.e., 55830784 + 12166144 = 7472^2 + 3488^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67996927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132551 + ... + 133062.

Almost surely, 2^67996928 is an apocalyptic number.

It is an amenable number.

67996928 is a deficient number, since it is larger than the sum of its proper divisors (67731826).

67996928 is an equidigital number, since it uses as much as digits as its factorization.

67996928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265629 (or 265615 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 56.

The square root of 67996928 is about 8246.0249817715. The cubic root of 67996928 is about 408.1593636068.

The spelling of 67996928 in words is "sixty-seven million, nine hundred ninety-six thousand, nine hundred twenty-eight".