78028788 has 24 divisors (see below), whose sum is σ = 189983808. Its totient is φ = 24878656.

The previous prime is 78028757. The next prime is 78028799. The reversal of 78028788 is 88782087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141081 + ... + 141632.

It is an arithmetic number, because the mean of its divisors is an integer number (7915992).

Almost surely, 2^78028788 is an apocalyptic number.

It is an amenable number.

78028788 is an abundant number, since it is smaller than the sum of its proper divisors (111955020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78028788 is a wasteful number, since it uses less digits than its factorization.

78028788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282743 (or 282741 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 48.

The square root of 78028788 is about 8833.3905155382. The cubic root of 78028788 is about 427.3184263616.

The spelling of 78028788 in words is "seventy-eight million, twenty-eight thousand, seven hundred eighty-eight".