68087128 has 32 divisors (see below), whose sum is σ = 132678000. Its totient is φ = 32717440.

The previous prime is 68087111. The next prime is 68087137. The reversal of 68087128 is 82178086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61863 + ... + 62953.

Almost surely, 2^68087128 is an apocalyptic number.

It is an amenable number.

68087128 is a deficient number, since it is larger than the sum of its proper divisors (64590872).

68087128 is a wasteful number, since it uses less digits than its factorization.

68087128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 68087128 is about 8251.4924710624. The cubic root of 68087128 is about 408.3397624792.

The spelling of 68087128 in words is "sixty-eight million, eighty-seven thousand, one hundred twenty-eight".