978806416 has 40 divisors (see below), whose sum is σ = 2294853120. Its totient is φ = 394811904.

The previous prime is 978806371. The next prime is 978806429. The reversal of 978806416 is 614608879.

978806416 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 978806416.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255136 + ... + 258943.

It is an arithmetic number, because the mean of its divisors is an integer number (57371328).

Almost surely, 2^978806416 is an apocalyptic number.

It is an amenable number.

978806416 is an abundant number, since it is smaller than the sum of its proper divisors (1316046704).

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

978806416 is a wasteful number, since it uses less digits than its factorization.

978806416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514111 (or 514105 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 978806416 is about 31285.8820556493. The cubic root of 978806416 is about 992.8849683882.

The spelling of 978806416 in words is "nine hundred seventy-eight million, eight hundred six thousand, four hundred sixteen".