978788320 has 48 divisors (see below), whose sum is σ = 2314258128. Its totient is φ = 391198720.

The previous prime is 978788303. The next prime is 978788333. The reversal of 978788320 is 23887879.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385455 + ... + 387985.

It is an arithmetic number, because the mean of its divisors is an integer number (48213711).

Almost surely, 2^978788320 is an apocalyptic number.

It is an amenable number.

978788320 is an abundant number, since it is smaller than the sum of its proper divisors (1335469808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

978788320 is a wasteful number, since it uses less digits than its factorization.

978788320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4963 (or 4955 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 978788320 is about 31285.5928503840. The cubic root of 978788320 is about 992.8788495899.

The spelling of 978788320 in words is "nine hundred seventy-eight million, seven hundred eighty-eight thousand, three hundred twenty".