78228848 has 20 divisors (see below), whose sum is σ = 154429848. Its totient is φ = 38376000.

The previous prime is 78228827. The next prime is 78228853. The reversal of 78228848 is 84882287.

It is a happy number.

It is a super-2 number, since 2×78228848² = 12239505318814208, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 45278 + ... + 46973.

Almost surely, 2^78228848 is an apocalyptic number.

It is an amenable number.

78228848 is a deficient number, since it is larger than the sum of its proper divisors (76201000).

78228848 is a wasteful number, since it uses less digits than its factorization.

78228848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92312 (or 92306 counting only the distinct ones).

The product of its digits is 458752, while the sum is 47.

The square root of 78228848 is about 8844.7073439430. The cubic root of 78228848 is about 427.6833188913.

The spelling of 78228848 in words is "seventy-eight million, two hundred twenty-eight thousand, eight hundred forty-eight".