78855430 has 16 divisors (see below), whose sum is σ = 143737920. Its totient is φ = 31142592.

The previous prime is 78855391. The next prime is 78855451. The reversal of 78855430 is 3455887.

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 7 ways as a sum of consecutive naturals, for example, 49119 + ... + 50698.

It is an arithmetic number, because the mean of its divisors is an integer number (8983620).

Almost surely, 2^78855430 is an apocalyptic number.

78855430 is a deficient number, since it is larger than the sum of its proper divisors (64882490).

78855430 is a wasteful number, since it uses less digits than its factorization.

78855430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99903.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 78855430 is about 8880.0579953061. The cubic root of 78855430 is about 428.8221416119.

The spelling of 78855430 in words is "seventy-eight million, eight hundred fifty-five thousand, four hundred thirty".