78057826 has 64 divisors (see below), whose sum is σ = 151787520. Its totient is φ = 29475600.

The previous prime is 78057797. The next prime is 78057841. The reversal of 78057826 is 62875087.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1099371 + ... + 1099441.

It is an arithmetic number, because the mean of its divisors is an integer number (2371680).

Almost surely, 2^78057826 is an apocalyptic number.

78057826 is a deficient number, since it is larger than the sum of its proper divisors (73729694).

78057826 is a wasteful number, since it uses less digits than its factorization.

78057826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 78057826 is about 8835.0340123850. The cubic root of 78057826 is about 427.3714278835.

The spelling of 78057826 in words is "seventy-eight million, fifty-seven thousand, eight hundred twenty-six".