978715078 has 32 divisors (see below), whose sum is σ = 1621762560. Its totient is φ = 439289760.

The previous prime is 978715057. The next prime is 978715093. The reversal of 978715078 is 870517879.

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 15 ways as a sum of consecutive naturals, for example, 617475 + ... + 619057.

It is an arithmetic number, because the mean of its divisors is an integer number (50680080).

Almost surely, 2^978715078 is an apocalyptic number.

978715078 is a deficient number, since it is larger than the sum of its proper divisors (643047482).

978715078 is a wasteful number, since it uses less digits than its factorization.

978715078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932.

The product of its (nonzero) digits is 987840, while the sum is 52.

The square root of 978715078 is about 31284.4222896956. The cubic root of 978715078 is about 992.8540835108.

The spelling of 978715078 in words is "nine hundred seventy-eight million, seven hundred fifteen thousand, seventy-eight".