78024728 has 16 divisors (see below), whose sum is σ = 146800080. Its totient is φ = 38878048.

The previous prime is 78024719. The next prime is 78024733. The reversal of 78024728 is 82742087.

It is a junction number, because it is equal to n+sod(n) for n = 78024691 and 78024700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14300 + ... + 18987.

It is an arithmetic number, because the mean of its divisors is an integer number (9175005).

Almost surely, 2^78024728 is an apocalyptic number.

It is an amenable number.

78024728 is a deficient number, since it is larger than the sum of its proper divisors (68775352).

78024728 is a wasteful number, since it uses less digits than its factorization.

78024728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33586 (or 33582 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 78024728 is about 8833.1607027156. The cubic root of 78024728 is about 427.3110148112.

The spelling of 78024728 in words is "seventy-eight million, twenty-four thousand, seven hundred twenty-eight".