68478628 has 48 divisors (see below), whose sum is σ = 129830400. Its totient is φ = 31530240.

The previous prime is 68478611. The next prime is 68478629. The reversal of 68478628 is 82687486.

It is not an unprimeable number, because it can be changed into a prime (68478629) 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 15 ways as a sum of consecutive naturals, for example, 492583 + ... + 492721.

It is an arithmetic number, because the mean of its divisors is an integer number (2704800).

Almost surely, 2^68478628 is an apocalyptic number.

It is an amenable number.

68478628 is a deficient number, since it is larger than the sum of its proper divisors (61351772).

68478628 is a wasteful number, since it uses less digits than its factorization.

68478628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 338 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 49.

The square root of 68478628 is about 8275.1814481617. The cubic root of 68478628 is about 409.1209164191.

The spelling of 68478628 in words is "sixty-eight million, four hundred seventy-eight thousand, six hundred twenty-eight".