78028678 has 48 divisors (see below), whose sum is σ = 148811040. Its totient is φ = 30409344.

The previous prime is 78028663. The next prime is 78028679. The reversal of 78028678 is 87682087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78028679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92583 + ... + 93421.

It is an arithmetic number, because the mean of its divisors is an integer number (3100230).

Almost surely, 2^78028678 is an apocalyptic number.

78028678 is a deficient number, since it is larger than the sum of its proper divisors (70782362).

78028678 is a wasteful number, since it uses less digits than its factorization.

78028678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 46.

The square root of 78028678 is about 8833.3842891612. The cubic root of 78028678 is about 427.3182255595.

The spelling of 78028678 in words is "seventy-eight million, twenty-eight thousand, six hundred seventy-eight".